Can someone please help me finish this derivative problem?
Here's the problem:
Here's my work so far:
f '(v) = 3[ (1-2v) / (1+v)] ^2 times [(1+v)(-2) - (1-2v)(v) / (1+v)^2 ]
f '(v) = [3(1-2v)^2] / (1+v)2 times [-2 - 2v - v + 2v^2] / (1+v)^2 ]
f '(v) = " times (-2-3v+2v^2) / (1+v)^2
f '(v) = [3(1-2v)^2][-2-3v+2v^2] / [1+v]^4
..thats as far as I got, but the answer is:
How did they get that??