- #1

- 205

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so i am trying to use f(x)=f(a)+f'(a)(x-a)

f(a)=-4

f'(x)=1/3(x^-2/3)

f'(a)=-1/48

so i get -4+1/48(x+64)

is that right?

- Thread starter Rasine
- Start date

- #1

- 205

- 0

so i am trying to use f(x)=f(a)+f'(a)(x-a)

f(a)=-4

f'(x)=1/3(x^-2/3)

f'(a)=-1/48

so i get -4+1/48(x+64)

is that right?

- #2

Dick

Science Advisor

Homework Helper

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Well, you say f'(a)=-1/48 and you put +1/48 into the answer. Which is it?

- #3

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it is the latter

- #4

Dick

Science Advisor

Homework Helper

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Keerect. Then everything is ok.

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