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Mathematics 13 Online
OpenStudy (anonymous):

Calculus 2...

OpenStudy (anonymous):

Let \[f(x)=\int\limits_{1}^{x}\frac{ dt }{ \sqrt{8+t^4} }\] Find (f^-1)'(0)

OpenStudy (anonymous):

sqrt(8+t^4)

OpenStudy (anonymous):

do you know the fundamental theorem of calculus

OpenStudy (anonymous):

intergal with limits fx dx = F(b)-F(a)

OpenStudy (anonymous):

the derivative of an integral is the integrand

OpenStudy (anonymous):

So am I suppose to find the derivative then apply the limits?

OpenStudy (anonymous):

do you know the formula to find the derivative of an inverse function?

OpenStudy (anonymous):

No

OpenStudy (anonymous):

\[(f^{-1}(x))' = \frac{1}{f'(f^{-1}(x))}\]

OpenStudy (anonymous):

so when x = 0, what does the equation look like?

OpenStudy (anonymous):

is f(x)^-1 suppose to look like this\[\frac{ 1 }{ \frac{ dt }{ \sqrt{8+t^4}} }\] Then after that I look for the derivative all under 1?

OpenStudy (anonymous):

f'(x) = 1/sqrt(8 + x^4)

OpenStudy (anonymous):

now you need to find f^-1(0)

OpenStudy (anonymous):

and f^-1(0) = 1, so 1/f'(1)

OpenStudy (anonymous):

1/(1/3) = 3. So 3 is your answer

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