Given$3+3=1$x$3+$y$3=1,$ find$$dydx$$ by implicit differentiation.

Select one:

a$.$

$()1/2($yx$)1/2$

b$.$

$()1/2($xy$)1/2$

c$.$

$()1/2($xy$)1/2$

d$.$

$()1/2$