Question

implicit differentiation problem

Answer 1

\[y ^{2}=x ^{2}\div(xy-28)\]

Answer 2

at the point (4,8)

Answer 3

this is your problem?
\[\large y^2=\frac {x^2}{xy-28} \]

Answer 4

yeah..
i got:
\[y \prime=(2x ^{2}y-2x(28)-y)/(2y(xy-28)^{2})+x)\]
i don't know how to make the giant division line thing ><