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Mathematics 7 Online
OpenStudy (legomyego180):

Average value of functions

OpenStudy (legomyego180):

Number 22

OpenStudy (legomyego180):

\[\frac{ 1 }{ 3 }\int\limits_{1}^{4}f(x)=5\]

OpenStudy (agent0smith):

Multiply both sides by 3

OpenStudy (legomyego180):

so 15

OpenStudy (agent0smith):

Should be easy now...

OpenStudy (legomyego180):

Fundamental Theorum of Calculus?

OpenStudy (legomyego180):

im not sure what to do with the bounds.

OpenStudy (agent0smith):

Much easier than that.

OpenStudy (legomyego180):

divide by 6?

OpenStudy (agent0smith):

Pull the 6 out the front of the integral.

OpenStudy (legomyego180):

no that wouldnt make any sense

OpenStudy (legomyego180):

oh 30

OpenStudy (legomyego180):

I mean 5/6 lol

OpenStudy (agent0smith):

No...

OpenStudy (legomyego180):

5/6 isnt correct?

OpenStudy (agent0smith):

You know the value of the integral from 1 to 4. You need 6 times the value of the integral from 1 to 4.

OpenStudy (legomyego180):

How do you know that if you dont have a function for f(x) though?

OpenStudy (agent0smith):

You don't need it. See my last post. You already worked out the value of the integral from 1 to 4.

OpenStudy (legomyego180):

It just clicked. 90 right?

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