I don't understand how to do differentiation or to find the equation of the line tangent to the graph at the point. Could someone please help me with a few homework questions I have?

Consider the following:

Use the power rule for differentiation to find

*f* '(

*x*). Give your answer using the form below where

*B* >

*D* >

*F*.

*f* '(

*x*) =

*Ax^B* +

*Cx^D* +

*Ex^F*
It asks what A-F equals. I have no clue where to even start with this question.

The next question is Find the equation of the line that is tangent to the graph of

*f*(

*x*) = 2

*x^*4 - 7

*x^*2 + 230 at the point (3, 329).

y(x)=?

Ok and one more please

*Consider the following: f*(

*x*) = 3

*x^*2 - 7

*x* Find f(7)...I thought you would just put 7 in where x is but that answer did not work

I would appreciate any help!