Originally Posted by

**akifbayram** I'm new to Calculus and am having a hard time adjusting to the new environment of University! Thanks all for looking.

f(x) = 4pi*^4*

f'(x) = ?

what is the derivative of a constant?

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Find an equation of the tangent line to the curve at the given point.

(Assume the tangent line form to be f(x) = mx + b.)

y=e^*x*/x (1, e)

find y'(x) and evaluate y'(1) to get the slope of the tangent line.

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Find *f '*(*x*) and *f ''*(*x*). *f*(*x*) = *x**^9**e^x*

use the product rule to find f'(x) ... you'll have to use it again to find f''(x)

*f'*(*x*) = ?

*f''*(*x*) = ?