Answer:
See below:
Step-by-step explanation:
1.To find the average value of the function f(x) = 4 - x^2 over the interval [-2,2],
we need to evaluate the definite integral of the function over the interval, and then divide by the length of the interval.
The definite integral of the function over the interval [-2,2] is given by:
∫(from -2 to 2) (4 - x^2) dx = [4x - (x^3)/3] (from -2 to 2) = [32/3]
The length of the interval is 2 - (-2) = 4.
Therefore, the average value of the function over the interval [-2,2] is:
[32/3] / 4 = 8/3
So the answer is: 8/3
2)
The definite integral of the function over the interval [1,3] is given by:
∫(from 1 to 3) 4(x^2+1)/x^2 dx
= ∫(from 1 to 3) 4 + 4/x^2 dx
= [4x + 4(-1)/x] (from 1 to 3)
= 8 + 4/3
= 28/3
The length of the interval is 3 - 1 = 2.
Therefore, the average value of the function over the interval [1,3] is:
(28/3) / 2 = 14/3
So the answer is: 14/3
3)The definite integral of the function over the interval [0,pi] is given by:
∫(from 0 to pi) sin(x) dx = [-cos(x)] (from 0 to pi) = 2
The length of the interval is pi - 0 = pi.
Therefore, the average value of the function over the interval [0,pi] is:
2 / pi
So the answer is: 2/pi
4) The definite integral of the function over the interval [0,pi/2] is given by:
∫(from 0 to pi/2) cos(x) dx = [sin(x)] (from 0 to pi/2) = 1
The length of the interval is pi/2 - 0 = pi/2.
Therefore, the average value of the function over the interval [0,pi/2] is:
1 / (pi/2)
Simplifying, we get:
2/pi
So the answer is: 2/pi
5)The definite integral of the function over the interval [1,3] is given by:
∫(from 1 to 3) 9/x^2 dx = [-9/x] (from 1 to 3) = 3 - (-9) = 12
The length of the interval is 3 - 1 = 2.
Therefore, the average value of the function over the interval [1,3] is:
12 / 2 = 6
So the answer is: 6
6) The definite integral of the function over the interval [1,4] is given by:
∫(from 1 to 4) x^2 dx = [x^3/3] (from 1 to 4) = (4^3/3) - (1^3/3) = 21
The length of the interval is 4 - 1 = 3.
Therefore, the average value of the function over the interval [1,4] is:
21 / 3 = 7
So the answer is: 7