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Mathematics 8 Online
OpenStudy (anonymous):

Find the derivative of f(x) = 5/x at x = -1.

OpenStudy (anonymous):

-5

OpenStudy (ipwnbunnies):

Didn't I show you how to do this? Move the x into the numerator, find the derivative. Plug x in.

OpenStudy (anonymous):

its -5

OpenStudy (anonymous):

right? @iPwnBunnies

OpenStudy (ipwnbunnies):

No, you're plugging in -1 into the original function. You have to find the derivative first.

OpenStudy (anonymous):

5/x= 5x^-1 find the derivative of this.

OpenStudy (anonymous):

It's just the power rule

OpenStudy (anonymous):

Do you know how to do it?

OpenStudy (anonymous):

no im confuse

OpenStudy (anonymous):

|dw:1397340437656:dw|

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