Asked by Daniel

f(x)=12x/sinx+cosx
find f'(-pie)
anybody know the answer!!!
Answered by Writeacher
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Answered by Reiny
clarify if you mean
f(x) = 12x/(sinx + cosx) or the way you typed it.
Answered by Daniel
f(x)= 12x
________
sinx+cosx
thats how the problem is and i need to find f'(-pie)
Answered by Helper
From your previous post, which MathMate answered.

f(x) = 12x/(sinx + cosx)
for -pi

calculus-correction - MathMate, Thursday, February 24, 2011 at 9:45pm

The required problem was
f(-π)
= 12(-π)/(0+(-1))
= 12π

12pi is the answer.

You have said that this is not the answer.
Please post what you think the answer is then.

I checked this with an online calculator and got the same answer as MathMate.

FYI, In the future it would help if you used parenthesis as MathMate and Reiny requested.

Like this,
f(x) = 12x/(sinx + cosx)
Answered by Daniel
sorry about that and i said yes that was the way but in the computer it doesnt have the parenthesis but yeah its the same way that the problem im trying to solve
Answered by Daniel
im confused on this problem and i really need some help if you can help me and yes that is the problem i am trying to solve i would appreciate it
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