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## #1 2013-03-21 03:20:00

apiece
Novice

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### Help me to solve this plz!

Help me to solve this plz!
If
g(x)=2-5f(3x) & f'^(-1)(0)=5

g'^(-1)(2)=?

A)-0.33
B)0.66
C)0.33
D)-0.66
tnx

## #2 2013-03-21 04:32:19

bob bundy
Moderator

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### Re: Help me to solve this plz!

hi apiece

Welcome to the forum.

g(x)=2-5f(3x)

OK. I get that.

f'^(-1)(0)=5

Do you  mean the inverse function for f evaluated at x = 0, is 5  ?

The second image doesn't say this.

g'^(-1)(2)=?

Do you mean differentiate g, construct the inverse function, then evaluate it at x = 2    ?

That's not what you've got in the third image.

And now I think about it, by writing function^-1 do you mean the inverse function at all, or the reciprocal function

eg.  does sin^-1 mean arcsin or 1/sin ?

Bob

Last edited by bob bundy (2013-03-21 05:21:45)

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