Answer to Question #87287 in Calculus for Joshua

Question

7.Differentiate with respect to x: f(x)=(ax^3+bx)
a.3a−b
b.ax^2+b
c.3x^2+1
d.3ax^2+b

2x5+x2−5 dy
8.Given ------------ find ----
t^2, dx


a.c−t^−2+8t^−3
b.6t+7t^−3
c.t^2+5t^−3
d.6t^2+10t^−3