Wednesday

April 16, 2014

April 16, 2014

Posted by **Alex** on Thursday, October 29, 2009 at 9:07pm.

Attempt: I know that the average value is the integration of f(t) from a to b divided by b-a. I used u substitution to get u= -t^2 and du= -2xdx. I

changed the limits of integration to [0,25] and I got integral of e^u du.

I am not sure if this is right, but then would the integral of that be

just e^u and I would just plug in 25, because I did that and the answer

was wrong.

- Calculus -
**MathMate**, Thursday, October 29, 2009 at 9:39pmI don't see anything wrong with your approach. Perhaps there was an arithmetic error lurking somewhere.

What did you get for the answer?

Did you divide the integral by 5 or 25?

- Calculus -
**Collin**, Friday, October 30, 2009 at 4:25pmYou are almost right but since u=-t^(2) the limits are [0,-25] then put them into e^(u) and you get,

e^(-25)-e^(0)=

e^(-25)-1

Then divide that answer by 5 thus the answer is,

(e^(-25)-1)/5

**Related Questions**

Calculus - Find the average value of f(t)=-2te^(-t^2) on the interval [0,3]

Calculus - Use the Fundamental Theorem of Calculus to find the area of the ...

calculus - Find the average value of the function f(x)=8x^2-5x+6 , on the ...

calculus - is average rate of change and average value the same or will you get ...

Calculus - a)Find the average value of f(x) = e-x over the interval [0,k] b)What...

Calculus - A) Find the average value of f(x)=x^3-x+1 on the interval (0,2) B) ...

Average Value - Calculus - What is the average value of y for the part of the ...

calculus - Let g(x)=f(2x). Show that the average value of f on the interval [0,...

calculus - Find a value c in the interval [0,2] such that f(c)is equal to the ...

calculus - a company introduces a new product for which the number of units sold...