Posted by **david** on Tuesday, December 12, 2006 at 9:56pm.

d/dx integral from o to x of function cos(2*pi*x) du is

first i do the integral and i find the derivative right.

by the fundamental theorem of calculus, if there is an integral from o to x, don't i just plug the x in the function.

the integral of the problem is cos*2*pi*) is just cos(2*pi*x) right or is that wrong. then i find the derivative.

I'm not sure. I think it's sin(2pi), but you can check out calc101 (google it) for help..?

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