Hi would somebody be able to check my answers to some questions I have, i'll just post one at a time as they take up a bit of room:
Q: Obtain for each of the following functions.
i)
A:
Sub
right here is where you went wrong. you need to apply the chain rule so you need to include this multiplied by a -2x because the -2x is the derivative of 1-x^2
The 2's cancel out and you are left with -x on the top.