Advanced Engineering Mathematics
6th Edition
ISBN: 9781284105902
Author: Dennis G. Zill
Publisher: Jones & Bartlett Learning
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Chapter 8.7, Problem 2E
To determine
To Solve: The given system of equations using Cramer’s rule.
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2. (a) State Fermat's principle for the propagation of a light ray from point P at (x1,y1)
to Q at (x2, y2), expressing the principle as a problem in Calculus of Variations.
(b) Suppose c(y) is the speed of light in a medium, given by
c(y)
Y
where a is a constant. Find the path of a light ray between the points P: (−1,3)
and Q (1, 3). Is there more than one possible path?
(c) Sketch the path of the light ray, and interpret what an observer at Q would see if
there were a light source at P.
On a given day, the sea level pressure is 1013.2 hPA. The temperature at 3,000 ft AMSL is given as minus 4°C. The temperature difference compared with the ISA is:
Can you give me a step by step explanation
ISA - 13°C
ISA - 4°C
(c)ISA - 10°C
(d) ISA +10°C
ISA is +15 Celsius
Answer is -13Celsius
answer the question attched
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- Proposition: If m is an odd integer, then m + 6 is an odd integer. Proof: For m + 6 to be an odd integer, there must exist an integer n such that m+6=2n+1. Subtracting 6 from both sides, we see that m = 2n+1-6 = = 2n― 6+1 = 2(n − 3) + 1. Since the integers are closed under subtraction, then n-3 € Z. Hence, the last equation implies that m = = 2q+1 where q = n = 3. This proves - that if m is an odd integer, then m + 6 is an odd integer. Based upon the Reading assignment and the Elements of Style >>, which of the following is the most significant error in the proof? The proof does not use complete sentences The proof contains a sentence that begins with a mathematical symbol The proof uses cumbersome notation The proof contains a variable used for more than one object The proof is written backwards The proof uses an example to prove the general casearrow_forwardDetermine the force in members HI and FI of the truss shown when P = 100 kips.arrow_forward7:33 97% UNIVERSITY OF THE WEST INDIES OPEN CAMPUS MATH0900 SEMESTER 2 2024/2025 Tutorial Assignment 1 – GROUP ASSESSMENT ( 52 marks) 26% Course Work + 4% - from Peer Assessment TOTAL 30% 1) a) From the set {-6, 5, 3.4, 8, -²/5, √(-3), √5, 6i, -3.2, 5+4i} i) List the set of ii) List the set of iii) List the set of vi) List the set of b) Calculate Natural Numbers Integers Numbers Rational Numbers Imaginary numbers (4 marks) || i) 5(-3)+(-6)(-4) -7(-2) = ii) -4(-2)-3(6) + 2(-5) = 3(-2) (2)7-3(-5) (4, 4 marks) 2) a) Calculate 13 -13433 x 5/6 = (4 marks) b) Given 2 3(x-2)=2(2x+3)-1 5 Solve for x (4 marks) Same as 3(x-2)/2 = 2(2x+3)/5 - 1 3) a) Calculate the time taken for an investment of $900,000 to gain an interest of $75,600 if the interest rate is 1.2%. (3 marks) b) 4 sandwiches and 2 drinks cost $46.00 also 3 sandwiches and 1 drinks cost $32.00 What is the cost of each item? (4 marks) 4) a) Out of 7 male employees and 5 female employees 4 are randomly selected for a pay increase. How…arrow_forward
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