Answer:

Explanation:
1. To derive a function we use the power rule, it states:
The derivative of
is

2. Furthermore since this function has x in brackets to a power we need to use the chain rule
=
x
3. For this equation let
u =

y =

lets differentiate u first using the power rule
= 2x -7
=

a negative exponent is simply
therefore
=

now we do
x
x 2x -7 =
3. Now we replace the u with its original value
