EBK BASIC TECHNICAL MATHEMATICS
11th Edition
ISBN: 9780134508290
Author: Evans
Publisher: PEARSON CUSTOM PUB.(CONSIGNMENT)
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Chapter 3.3, Problem 1PE
To determine
The location of all points for which
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(b) In various places in this module, data on the silver content of coins
minted in the reign of the twelfth-century Byzantine king Manuel I
Comnenus have been considered. The full dataset is in the Minitab file
coins.mwx. The dataset includes, among others, the values of the
silver content of nine coins from the first coinage (variable Coin1) and
seven from the fourth coinage (variable Coin4) which was produced a
number of years later. (For the purposes of this question, you can
ignore the variables Coin2 and Coin3.) In particular, in Activity 8 and
Exercise 2 of Computer Book B, it was argued that the silver contents
in both the first and the fourth coinages can be assumed to be normally
distributed. The question of interest is whether there were differences in
the silver content of coins minted early and late in Manuel’s reign. You
are about to investigate this question using a two-sample t-interval.
(i) Using Minitab, find either the sample standard deviations of the
two variables…
5. (a) State the Residue Theorem. Your answer should include all the conditions required
for the theorem to hold.
(4 marks)
(b) Let y be the square contour with vertices at -3, -3i, 3 and 3i, described in the
anti-clockwise direction. Evaluate
に
dz.
You must check all of the conditions of any results that you use.
(5 marks)
(c) Evaluate
L
You must check all of the conditions of any results that you use.
ཙ
x sin(Tx)
x²+2x+5
da.
(11 marks)
3. (a) Lety: [a, b] C be a contour. Let L(y) denote the length of y. Give a formula
for L(y).
(1 mark)
(b) Let UCC be open. Let f: U→C be continuous. Let y: [a,b] → U be a
contour. Suppose there exists a finite real number M such that |f(z)| < M for
all z in the image of y. Prove that
<
||, f(z)dz| ≤ ML(y).
(3 marks)
(c) State and prove Liouville's theorem. You may use Cauchy's integral formula without
proof.
(d) Let R0. Let w € C. Let
(10 marks)
U = { z Є C : | z − w| < R} .
Let f UC be a holomorphic function such that
0 < |ƒ(w)| < |f(z)|
for all z Є U. Show, using the local maximum modulus principle, that f is constant.
(6 marks)
Chapter 3 Solutions
EBK BASIC TECHNICAL MATHEMATICS
Ch. 3.1 - EXAMPLE 5
If , then substitute a3 for t
For the...Ch. 3.1 - EXAMPLE 7
For the functions f(x) = 5x − 3 and g(x)...Ch. 3.1 - In Exercises 1–4, solve the given problems related...Ch. 3.1 - Prob. 2ECh. 3.1 - In Exercises 1–4, solve the given problems related...Ch. 3.1 - Prob. 4ECh. 3.1 - In Exercises 5–12, find the indicated...Ch. 3.1 - In Exercises 5–12, find the indicated...Ch. 3.1 - In Exercises 5–12, find the indicated...Ch. 3.1 - In Exercises 5–12, find the indicated...
Ch. 3.1 - In Exercises 5–12, find the indicated...Ch. 3.1 - In Exercises 5–12, find the indicated...Ch. 3.1 - In Exercises 5–12, find the indicated functions.
A...Ch. 3.1 - In Exercises 5–12, find the indicated...Ch. 3.1 - In Exercises 13–24, evaluate the given...Ch. 3.1 - In Exercises 13–24, evaluate the given...Ch. 3.1 - In Exercises 13–24, evaluate the given...Ch. 3.1 - In Exercises 13–24, evaluate the given...Ch. 3.1 - In Exercises 13–24, evaluate the given...Ch. 3.1 - In Exercises 13–24, evaluate the given...Ch. 3.1 - In Exercises 13–24, evaluate the given...Ch. 3.1 - In Exercises 13–24, evaluate the given...Ch. 3.1 - In Exercises 13–24, evaluate the given...Ch. 3.1 - In Exercises 13–24, evaluate the given...Ch. 3.1 - In Exercises 13–24, evaluate the given...Ch. 3.1 - In Exercises 13–24, evaluate the given...Ch. 3.1 - In Exercises 25–28, evaluate the given functions....Ch. 3.1 - In Exercises 25–28, evaluate the given functions....Ch. 3.1 - In Exercises 25–28, evaluate the given functions....Ch. 3.1 - In Exercises 25–28, evaluate the given functions....Ch. 3.1 - In Exercises 29–32, determine the function y =...Ch. 3.1 - In Exercises 29–32, determine the function y =...Ch. 3.1 - In Exercises 29–32, determine the function y =...Ch. 3.1 - Prob. 32ECh. 3.1 - Prob. 33ECh. 3.1 - Prob. 34ECh. 3.1 - Prob. 35ECh. 3.1 - Prob. 36ECh. 3.1 - Prob. 37ECh. 3.1 - Prob. 38ECh. 3.1 - Prob. 39ECh. 3.1 - In Exercises 39–42, write the equation as given by...Ch. 3.1 - In Exercises 39–42, write the equation as given by...Ch. 3.1 - In Exercises 39–42, write the equation as given by...Ch. 3.1 - In Exercises 43–52, solve the given problems.
A...Ch. 3.1 - In Exercises 43–52, solve the given...Ch. 3.1 - In Exercises 43–52, solve the given problems.
45....Ch. 3.1 - In Exercises 43–52, solve the given problems.
46....Ch. 3.1 - In Exercises 43–52, solve the given problems.
The...Ch. 3.1 - In Exercises 43–52, solve the given problems.
The...Ch. 3.1 - In Exercises 43–52, solve the given problems.
A...Ch. 3.1 - In Exercises 43–52, solve the given problems.
A...Ch. 3.1 -
(a) Explain the meaning of f [f(x)]. (b) Find f...Ch. 3.1 -
If f(x) = x and g(x) = x2, find (a) f [g(x)], and...Ch. 3.2 - Find the domain and range of the function .
Ch. 3.2 - Prob. 2PECh. 3.2 - In Example 8, find p as a function of r if there...Ch. 3.2 - In Exercises 1-4, solve the given problems related...Ch. 3.2 - Prob. 2ECh. 3.2 - In Exercises 1-4, solve the given problems related...Ch. 3.2 - Prob. 4ECh. 3.2 - Prob. 5ECh. 3.2 - Prob. 6ECh. 3.2 - Prob. 7ECh. 3.2 - Prob. 8ECh. 3.2 - Prob. 9ECh. 3.2 - Prob. 10ECh. 3.2 - Prob. 11ECh. 3.2 - Prob. 12ECh. 3.2 - Prob. 13ECh. 3.2 - Prob. 14ECh. 3.2 - In Exercises 15-20, find the domain of the given...Ch. 3.2 - In Exercises 15-20, find the domain of the given...Ch. 3.2 - Prob. 17ECh. 3.2 - In Exercises 15-20, find the domain of the given...Ch. 3.2 - Prob. 19ECh. 3.2 - In Exercises 15-20, find the domain of the given...Ch. 3.2 - Prob. 21ECh. 3.2 - In Exercises 21-24, evaluate the indicated...Ch. 3.2 - In Exercises 21-24, evaluate the indicated...Ch. 3.2 - In Exercises 21-24, evaluate the indicated...Ch. 3.2 - Prob. 25ECh. 3.2 - In Exercises 25-38, determine the appropriate...Ch. 3.2 - Prob. 27ECh. 3.2 - In Exercises 25-38, determine the appropriate...Ch. 3.2 - Prob. 29ECh. 3.2 - In Exercises 25-38, determine the appropriate...Ch. 3.2 - Prob. 31ECh. 3.2 - Prob. 32ECh. 3.2 - Prob. 33ECh. 3.2 - Prob. 34ECh. 3.2 - Prob. 35ECh. 3.2 - In Exercises 25-38, determine the appropriate...Ch. 3.2 - Prob. 37ECh. 3.2 - Prob. 38ECh. 3.2 - Prob. 39ECh. 3.2 - Prob. 40ECh. 3.2 - Prob. 41ECh. 3.2 - Prob. 42ECh. 3.2 - Prob. 43ECh. 3.2 - Prob. 44ECh. 3.2 - Prob. 45ECh. 3.2 - Prob. 46ECh. 3.2 - Prob. 47ECh. 3.2 - Prob. 48ECh. 3.2 - Prob. 49ECh. 3.2 - Prob. 50ECh. 3.2 - Prob. 51ECh. 3.2 - Prob. 52ECh. 3.3 - Prob. 1PECh. 3.3 - Prob. 1ECh. 3.3 - Prob. 2ECh. 3.3 - In Exercises 3 and 4, determine (at least...Ch. 3.3 - Prob. 4ECh. 3.3 - Prob. 5ECh. 3.3 - Prob. 6ECh. 3.3 - Prob. 7ECh. 3.3 - Prob. 8ECh. 3.3 - Prob. 9ECh. 3.3 - Prob. 10ECh. 3.3 - Prob. 11ECh. 3.3 - Prob. 12ECh. 3.3 - Prob. 13ECh. 3.3 - Prob. 14ECh. 3.3 - Prob. 15ECh. 3.3 - Prob. 16ECh. 3.3 - In Exercises 15–18, determine the quadrant in...Ch. 3.3 - In Exercises 15–18, determine the quadrant in...Ch. 3.3 -
In Exercises 19–38, answer the given...Ch. 3.3 -
In Exercises 19–38, answer the given...Ch. 3.3 -
In Exercises 19–38, answer the given...Ch. 3.3 -
In Exercises 19–38, answer the given...Ch. 3.3 -
In Exercises 19–38, answer the given...Ch. 3.3 -
In Exercises 19–38, answer the given...Ch. 3.3 - In Exercises 19–38, answer the given...Ch. 3.3 - In Exercises 19–38, answer the given...Ch. 3.3 - In Exercises 19–38, answer the given...Ch. 3.3 - In Exercises 19–38, answer the given...Ch. 3.3 - In Exercises 19–38, answer the given...Ch. 3.3 -
In Exercises 19–38, answer the given...Ch. 3.3 - In Exercises 19–38, answer the given...Ch. 3.3 - In Exercises 19–38, answer the given...Ch. 3.3 - In Exercises 19–38, answer the given...Ch. 3.3 - In Exercises 19–38, answer the given...Ch. 3.3 - In Exercises 19–38, answer the given questions.
If...Ch. 3.3 - In Exercises 19–38, answer the given...Ch. 3.3 - In Exercises 19–38, answer the given questions.
On...Ch. 3.3 - Prob. 38ECh. 3.4 - Prob. 1PECh. 3.4 - Prob. 2PECh. 3.4 - Prob. 1ECh. 3.4 - Prob. 2ECh. 3.4 - Prob. 3ECh. 3.4 - Prob. 4ECh. 3.4 - In Exercises 5–36, graph the given functions.
5.
Ch. 3.4 - In Exercises 5–36, graph the given functions.
6. y...Ch. 3.4 - In Exercises 5–36, graph the given functions.
7. y...Ch. 3.4 - In Exercises 5–36, graph the given functions.
8. y...Ch. 3.4 - In Exercises 5–36, graph the given functions.
9. s...Ch. 3.4 - In Exercises 5−36, graph the given functions.
10....Ch. 3.4 - In Exercises 5–36, graph the given functions.
Ch. 3.4 - In Exercises 5–36, graph the given functions.
Ch. 3.4 - In Exercises 5–36, graph the given...Ch. 3.4 - Prob. 14ECh. 3.4 - Prob. 15ECh. 3.4 - Prob. 16ECh. 3.4 - In Exercises 5–36, graph the given functions.
Ch. 3.4 - In Exercises 5–36, graph the given functions.
y =...Ch. 3.4 - In Exercises 5–36, graph the given...Ch. 3.4 - In Exercises 5–36, graph the given...Ch. 3.4 - In Exercises 5–36, graph the given...Ch. 3.4 - In Exercises 5–36, graph the given...Ch. 3.4 - In Exercises 5–36, graph the given...Ch. 3.4 - In Exercises 5–36, graph the given functions.
24....Ch. 3.4 - In Exercises 5–36, graph the given functions.
y =...Ch. 3.4 - In Exercises 5–36, graph the given functions.
26....Ch. 3.4 - In Exercises 5–36, graph the given functions.
27....Ch. 3.4 - In Exercises 5–36, graph the given functions.
28....Ch. 3.4 - In Exercises 5–36, graph the given...Ch. 3.4 - In Exercises 5–36, graph the given functions.
Ch. 3.4 - In Exercises 5–36, graph the given...Ch. 3.4 - In Exercises 5–36, graph the given functions.
32....Ch. 3.4 - In Exercises 5–36, graph the given functions.
33....Ch. 3.4 - In Exercises 5–36, graph the given functions.
34....Ch. 3.4 - In Exercises 5–36, graph the given functions.
35....Ch. 3.4 - In Exercises 5–36, graph the given functions.
36....Ch. 3.4 - In Exercises 37–40, use the graph to determine the...Ch. 3.4 - In Exercises 37–40, use the graph to determine the...Ch. 3.4 - In Exercises 37–40, use the graph to determine the...Ch. 3.4 - In Exercises 37–40, use the graph to determine the...Ch. 3.4 - In Exercises 41–70, graph the indicated...Ch. 3.4 - In Exercises 41–70, graph the indicated...Ch. 3.4 - Prob. 43ECh. 3.4 - Prob. 44ECh. 3.4 - Prob. 45ECh. 3.4 - Prob. 46ECh. 3.4 - Prob. 47ECh. 3.4 - Prob. 48ECh. 3.4 - Prob. 49ECh. 3.4 - Prob. 50ECh. 3.4 - Prob. 51ECh. 3.4 - Prob. 52ECh. 3.4 - In Exercises 41–70, graph the indicated...Ch. 3.4 - Prob. 54ECh. 3.4 - Prob. 55ECh. 3.4 - Prob. 56ECh. 3.4 - Prob. 57ECh. 3.4 - Prob. 58ECh. 3.4 - Prob. 59ECh. 3.4 - Prob. 60ECh. 3.4 - Prob. 61ECh. 3.4 - Prob. 62ECh. 3.4 - Prob. 63ECh. 3.4 - Prob. 64ECh. 3.4 - In Exercises 41–70, graph the indicated...Ch. 3.4 - In Exercises 41–70, graph the indicated...Ch. 3.4 - Prob. 67ECh. 3.4 - Prob. 68ECh. 3.4 - Prob. 69ECh. 3.4 - Prob. 70ECh. 3.4 - In Exercises 71‒74, determine whether or not the...Ch. 3.4 - In Exercises 71–74, determine whether or not the...Ch. 3.4 - In Exercises 71–74, determine whether or not the...Ch. 3.4 - In Exercises 71–74, determine whether or not the...Ch. 3.5 - Prob. 1PECh. 3.5 - Prob. 2PECh. 3.5 - Prob. 3PECh. 3.5 - Prob. 1ECh. 3.5 - Prob. 2ECh. 3.5 - Prob. 3ECh. 3.5 - In Exercises 3–18, display the graphs of the given...Ch. 3.5 - Prob. 5ECh. 3.5 - Prob. 6ECh. 3.5 - Prob. 7ECh. 3.5 - Prob. 8ECh. 3.5 - Prob. 9ECh. 3.5 - Prob. 10ECh. 3.5 - Prob. 11ECh. 3.5 - Prob. 12ECh. 3.5 - Prob. 13ECh. 3.5 - Prob. 14ECh. 3.5 - Prob. 15ECh. 3.5 - Prob. 16ECh. 3.5 - Prob. 17ECh. 3.5 - Prob. 18ECh. 3.5 - Prob. 19ECh. 3.5 - In Exercises 19–28, use a graphing calculator to...Ch. 3.5 - Prob. 21ECh. 3.5 - Prob. 22ECh. 3.5 - Prob. 23ECh. 3.5 - Prob. 24ECh. 3.5 - Prob. 25ECh. 3.5 - Prob. 26ECh. 3.5 - Prob. 27ECh. 3.5 - Prob. 28ECh. 3.5 - Prob. 29ECh. 3.5 - Prob. 30ECh. 3.5 - Prob. 31ECh. 3.5 - Prob. 32ECh. 3.5 - Prob. 33ECh. 3.5 - Prob. 34ECh. 3.5 - Prob. 35ECh. 3.5 - Prob. 36ECh. 3.5 - Prob. 37ECh. 3.5 - Prob. 38ECh. 3.5 - Prob. 39ECh. 3.5 - Prob. 40ECh. 3.5 - In Exercises 41–48, a function and how it is to be...Ch. 3.5 - Prob. 42ECh. 3.5 - Prob. 43ECh. 3.5 - Prob. 44ECh. 3.5 - Prob. 45ECh. 3.5 - Prob. 46ECh. 3.5 - Prob. 47ECh. 3.5 - Prob. 48ECh. 3.5 - Prob. 49ECh. 3.5 - Prob. 50ECh. 3.5 - Prob. 51ECh. 3.5 - Prob. 52ECh. 3.5 - Prob. 53ECh. 3.5 - Prob. 54ECh. 3.5 - Prob. 55ECh. 3.5 - Prob. 56ECh. 3.5 - In Exercises 53–60, solve the indicated equations...Ch. 3.5 - In Exercises 53–60, solve the indicated equations...Ch. 3.5 - Prob. 59ECh. 3.5 - Prob. 60ECh. 3.5 - Prob. 61ECh. 3.5 - Prob. 62ECh. 3.5 - Prob. 63ECh. 3.5 - Prob. 64ECh. 3.5 - Prob. 65ECh. 3.5 - Prob. 66ECh. 3.5 - Prob. 67ECh. 3.5 - Prob. 68ECh. 3.6 - Prob. 1PECh. 3.6 - Prob. 1ECh. 3.6 - Prob. 2ECh. 3.6 - Prob. 3ECh. 3.6 - Prob. 4ECh. 3.6 - Prob. 5ECh. 3.6 - Prob. 6ECh. 3.6 - Prob. 7ECh. 3.6 - Prob. 8ECh. 3.6 - Prob. 9ECh. 3.6 - Prob. 10ECh. 3.6 - Prob. 11ECh. 3.6 - Prob. 12ECh. 3.6 - Prob. 13ECh. 3.6 - Prob. 14ECh. 3.6 - Prob. 15ECh. 3.6 - Prob. 16ECh. 3.6 - Prob. 17ECh. 3.6 - Prob. 18ECh. 3.6 - Prob. 19ECh. 3.6 - Prob. 20ECh. 3.6 - Prob. 21ECh. 3.6 - Prob. 22ECh. 3.6 - Prob. 23ECh. 3.6 - Prob. 24ECh. 3.6 - Prob. 25ECh. 3.6 - Prob. 26ECh. 3.6 - Prob. 27ECh. 3.6 - Prob. 28ECh. 3.6 - Prob. 29ECh. 3.6 - Prob. 30ECh. 3 - Prob. 1RECh. 3 - Determine each of the following as being either...Ch. 3 - Prob. 3RECh. 3 - Prob. 4RECh. 3 - Prob. 5RECh. 3 - Prob. 6RECh. 3 - Prob. 7RECh. 3 - Prob. 8RECh. 3 - Prob. 9RECh. 3 - Prob. 10RECh. 3 - Prob. 11RECh. 3 - Prob. 12RECh. 3 - Prob. 13RECh. 3 - Prob. 14RECh. 3 - Prob. 15RECh. 3 - Prob. 16RECh. 3 - Prob. 17RECh. 3 - Prob. 18RECh. 3 - Prob. 19RECh. 3 - Prob. 20RECh. 3 - Prob. 21RECh. 3 - Prob. 22RECh. 3 - Prob. 23RECh. 3 - Prob. 24RECh. 3 - Prob. 25RECh. 3 - Prob. 26RECh. 3 - Prob. 27RECh. 3 - Prob. 28RECh. 3 - In Exercises 29–38, plot the graphs of the given...Ch. 3 - Prob. 30RECh. 3 - Prob. 31RECh. 3 - Prob. 32RECh. 3 - Prob. 33RECh. 3 - Prob. 34RECh. 3 - Prob. 35RECh. 3 - Prob. 36RECh. 3 - Prob. 37RECh. 3 - Prob. 38RECh. 3 - Prob. 39RECh. 3 - Prob. 40RECh. 3 - Prob. 41RECh. 3 - Prob. 42RECh. 3 - Prob. 43RECh. 3 - Prob. 44RECh. 3 - Prob. 45RECh. 3 - Prob. 46RECh. 3 - Prob. 47RECh. 3 - Prob. 48RECh. 3 - Prob. 49RECh. 3 - Prob. 50RECh. 3 - Prob. 51RECh. 3 - Prob. 52RECh. 3 - Prob. 53RECh. 3 - Prob. 54RECh. 3 - Prob. 55RECh. 3 - Prob. 56RECh. 3 - Prob. 57RECh. 3 - Prob. 58RECh. 3 - Prob. 59RECh. 3 - Prob. 60RECh. 3 - Prob. 61RECh. 3 - Prob. 62RECh. 3 - Prob. 63RECh. 3 - Prob. 64RECh. 3 - Prob. 65RECh. 3 - Prob. 66RECh. 3 - Prob. 67RECh. 3 - Prob. 68RECh. 3 - Prob. 69RECh. 3 - Prob. 70RECh. 3 - Prob. 71RECh. 3 - Prob. 72RECh. 3 - Prob. 73RECh. 3 - Prob. 74RECh. 3 - Prob. 75RECh. 3 - Prob. 76RECh. 3 - Prob. 77RECh. 3 - Prob. 78RECh. 3 - Prob. 79RECh. 3 - Prob. 80RECh. 3 - Prob. 81RECh. 3 - Prob. 82RECh. 3 - Prob. 83RECh. 3 - Prob. 84RECh. 3 - Prob. 85RECh. 3 - Prob. 86RECh. 3 - Prob. 87RECh. 3 - Prob. 88RECh. 3 - Prob. 89RECh. 3 - Prob. 90RECh. 3 - Prob. 91RECh. 3 - Prob. 92RECh. 3 - Prob. 93RECh. 3 - Prob. 94RECh. 3 - Prob. 95RECh. 3 - Prob. 96RECh. 3 - Prob. 1PTCh. 3 - Prob. 2PTCh. 3 - Prob. 3PTCh. 3 - Prob. 4PTCh. 3 - Prob. 5PTCh. 3 - Prob. 6PTCh. 3 - Prob. 7PTCh. 3 - Prob. 8PTCh. 3 - Prob. 10PTCh. 3 - Prob. 11PTCh. 3 - From the table in Problem 11, find the voltage for...
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- 3. (a) Let A be an algebra. Define the notion of an A-module M. When is a module M a simple module? (b) State and prove Schur's Lemma for simple modules. (c) Let AM(K) and M = K" the natural A-module. (i) Show that M is a simple K-module. (ii) Prove that if ƒ € Endд(M) then ƒ can be written as f(m) = am, where a is a matrix in the centre of M, (K). [Recall that the centre, Z(M,(K)) == {a Mn(K) | ab M,,(K)}.] = ba for all bЄ (iii) Explain briefly why this means End₁(M) K, assuming that Z(M,,(K))~ K as K-algebras. Is this consistent with Schur's lemma?arrow_forward(a) State, without proof, Cauchy's theorem, Cauchy's integral formula and Cauchy's integral formula for derivatives. Your answer should include all the conditions required for the results to hold. (8 marks) (b) Let U{z EC: |z| -1}. Let 12 be the triangular contour with vertices at 0, 2-2 and 2+2i, parametrized in the anticlockwise direction. Calculate dz. You must check the conditions of any results you use. (d) Let U C. Calculate Liz-1ym dz, (z - 1) 10 (5 marks) where 2 is the same as the previous part. You must check the conditions of any results you use. (4 marks)arrow_forward(a) Suppose a function f: C→C has an isolated singularity at wЄ C. State what it means for this singularity to be a pole of order k. (2 marks) (b) Let f have a pole of order k at wЄ C. Prove that the residue of f at w is given by 1 res (f, w): = Z dk (k-1)! >wdzk−1 lim - [(z — w)* f(z)] . (5 marks) (c) Using the previous part, find the singularity of the function 9(z) = COS(πZ) e² (z - 1)²' classify it and calculate its residue. (5 marks) (d) Let g(x)=sin(211). Find the residue of g at z = 1. (3 marks) (e) Classify the singularity of cot(z) h(z) = Z at the origin. (5 marks)arrow_forward
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Author:Robert F. Blitzer
Publisher:PEARSON
Discrete Mathematics With Applications
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ISBN:9781337694193
Author:EPP, Susanna S.
Publisher:Cengage Learning,
Pathways To Math Literacy (looseleaf)
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ISBN:9781259985607
Author:David Sobecki Professor, Brian A. Mercer
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03 - The Cartesian coordinate system; Author: Technion;https://www.youtube.com/watch?v=hOgKEplCx5E;License: Standard YouTube License, CC-BY
What is the Cartesian Coordinate System? | Don't Memorise; Author: Don't Memorise;https://www.youtube.com/watch?v=mgx0kT5UbKk;License: Standard YouTube License, CC-BY