\ 3.1 help me

[sarooo]

6-Differentiate the following function.
http://www.webassign.net/cgi-bin/sym...2F2%20x%29%5E4

8-Find the equation of the tangent line to the following curve at the given point P. Illustrate by graphing the curve and the tangent line on the same screen.

http://www.webassign.net/cgi-bin/sym...0-%202%20x%5E3
y=