For Exercises 9–20, refer to the sets A , B , C , and D . Determine the union or intersection as indicated. Express the answer in interval notation, if possible. (See Example 2 .) A = { x | x < − 4 } , B = { x | x > 2 } , C = { x | x ≥ − 7 } , D = { x | 0 ≤ x < 5 } A ∪ C
For Exercises 9–20, refer to the sets A , B , C , and D . Determine the union or intersection as indicated. Express the answer in interval notation, if possible. (See Example 2 .) A = { x | x < − 4 } , B = { x | x > 2 } , C = { x | x ≥ − 7 } , D = { x | 0 ≤ x < 5 } A ∪ C
Solution Summary: The author explains the formula used to find the union or intersection of two given sets.
For Exercises 9–20, refer to the sets A, B, C, and D. Determine the union or intersection as indicated. Express the answer in interval notation, if possible. (See Example 2.)
A
=
{
x
|
x
<
−
4
}
,
B
=
{
x
|
x
>
2
}
,
C
=
{
x
|
x
≥
−
7
}
,
D
=
{
x
|
0
≤
x
<
5
}
The functions f(x) = x² - 3 and g(x) = x² + 2 are shown on the graph.
+
N
y
10
LO
5
f(x) = x² - 3
4
♡
-3 -2
-10
-1
-2
-4-
-5
x
2
3
4 56
7
8
9
g(x) = x² + 2
If the equations were changed to the inequalities shown, explain how the graph would change.
y≤ x² - 3
y>-x²+2
a) find two linear map f. 9: R² →R³
s-t (1-5)=(1,-5)=(2, 2,0)
b) let f: RR linear map set (3)=-\
find (√5) and (√7) f (-1)
c) let X be Vector space over R and let sig ex
difcid h: X-R³ s.t h(x)=(f(x),0,9(x))
xex Prove that his linear map-
d) let f = L(x) S-t f²+2f+1=0 find §.
e) find ker(s) s-t SiR³ R² =
f(x, y, z)=(2x+1).
******
A craftsman of string instruments has received a new order to craft violins and guitars. The craftsman haslimited resources (wood, string, varnish) and time available to create the instruments. Each type of instrument(violin and guitar) requires specific amounts of these resources as well as a certain amount of time to complete.The craftsman wants to find the optimal number of violins and guitars to create in order to maximize the profitfrom selling them, while respecting the resource and time constraints (all instruments will be sold).The profit from selling each violin is 6,000 NOK, and the profit from selling each guitar is 3,000 NOK.Each violin requires 4 kg of wood, 0.3 l of varnish, and 2 m of string, and takes 3 days to craft. For eachguitar, the craftsman needs 5 kg of wood, 0.1 l of varnish, and 6 m of string, and it takes 2 days to make it.The craftsman’s workshop is stocked with 60 kg of wood, 2.5 l of varnish, and 65 m of string. The order needsto be completed in 30…
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RELATIONS-DOMAIN, RANGE AND CO-DOMAIN (RELATIONS AND FUNCTIONS CBSE/ ISC MATHS); Author: Neha Agrawal Mathematically Inclined;https://www.youtube.com/watch?v=u4IQh46VoU4;License: Standard YouTube License, CC-BY