3.57: Differentiate y=(3x22)2/3/(x1)y=(3x^{2}-2)^{2/3}/(x-1)

0606/13/O/N/22 — Question 12 · 7 marks

3.57 diagram
It is given that y=(3x22)23x1y = \dfrac{(3x^{2} - 2)^{\frac{2}{3}}}{x - 1}, for x>1x > 1.
(a)
Write dydx\dfrac{\mathrm{d}y}{\mathrm{d}x} in the form (3x22)13(x1)2(x2+Ax+B)\dfrac{(3x^{2} - 2)^{-\frac{1}{3}}}{(x - 1)^{2}}(x^{2} + Ax + B), where AA and BB are integers.
[5]
(b)
Find the approximate increase in yy as xx increases from 22 to 2+p2 + p, where pp is small.
[2]