The derivative of the function sin u with respect to u is given by (sin ) cos d u u du Use the chain rule to determine the derivative of y with respect to x where y 6sin x3 Q.7: Which is the correct solution? a) 18 2 cos 3 dy x x dx b) 6 2 cos 3 dy x x dx c) 6cos 3 dy x dx d) 6 cos 3 dy x x dx Q.8: Which is the slope of the function for x=1.5?