Post a New Question


posted by on .

Using an integration formula,what is the indefinite integral of (sign for integral)(cos(4x)+2x^2)(sin(4x)-x)dx. Any help very much appreciated.

  • calculus - ,

    An interesting problem! In fact, it would make a good exam question, because you need to know four rules to calculate the integral, or equivalent to four short questions.


    1. cos(4x)sin(4x)
    use substitution
    =(1/4)∫udu (use the power rule)

    2. -xcos(4x)
    Use integration by parts:

    3. 2x²sin(4x)
    Use integration by parts, similar to (2) above.

    4. -2x³
    use the power rule.

    Post your answer for a check if you wish. Do not forget the constant of integration (C).

Answer This Question

First Name:
School Subject:

Related Questions

More Related Questions

Post a New Question