Check this derivation please.
i have worked so far into this:
I am not sure if I am doing this right.
Could some one check so far and finish it off for me.
The answer should be: -3(1+2t^3)/(t^3-1)^2.
I am not sure where the top (1+2t^3) comes from please check.
p.s = sorry about the quick posts i've done thanks for the help I have recieved. Thanks