Question says-

find the derivatives of:d/dt t^(-pi^2)

Steps:

have no clue how to do this.

And then find the equation of thetangent line to y=4e^x at x=2?

Steps:derivative of y= 4e^x. Plug 2 in for x and then I find the slope of the tangent line which is 29.556

Then to find the equation I have slope m, and x=2. How do I find y to find the equation?

Please help!!