FP2 june 05 q8b Watch
How are the last 2 statements the same. Surely you cant take the +/- outside the logs
So you have two of 1 +root and 1-root.
Write ln (1 - root ) and ofcourse separate the x present. so you two ln equation. ln (1-root) -ln(x)
Lets deal with ln(1-root)
write -ln ( 1 / 1-root) if you know what I mean
Then multiply both top and bottom with 1 + root. And you will be fine.
back to FP1.