Ok, I have another problem that's bugging me pretty badly.
Find the derivative:
y=13t^2+40sqrt(t)+15/t
I know that the derivative of 13t^2 = 26t
but I'm unsure about what to do with the 40sqrt(t).
Would it be something like:
(.5)40x^-.5=1/20x?
but then what about 15/t?