Hi,

I'm having problems understanding the derivation of fraction exponents like this for example:

d/dx(x^(1/2))

Obviously I have more complicated problems than this to evaluate, but a basic explanation would be helpful.

The book I'm using for some reason skips talking about this....

The example I'm looking at on my homework is this:

d/dx((4/z^(1/3))-(z^(1/4)))

4 over the 3rd root of z, minus z to the 4th root.

Thanks much,

sig