Question

Integrate x^2(3-10x^3)^4 dx
using the substitution method.
In my papers it says u=3-10x^3 and du= -30x^2

How did du become = -30x^2? How/Where did they get -30x^2 from ???

Answer 1

when u = 3-10x^3
differentiate this w.r.t x
then du/dx =... ?
can u find ?

Answer 2

They just differentiated u

Answer 3

Oh okay! Thank you!

Answer 4

welcome ^_^