Engineering Board Exam Reviewer · Trigonometric Integrals and Substitution · medium

Evaluate: 2x,dx

1. x/2- 2x/4+C
2. x/2+ 2x/4+C
3. x- 2x/2+C
4. 3x/3+C

Answer

A. x/2- 2x/4+C

Solution

Using the half-angle identity 2x=1- 2x/2: x/2- 2x/4+C.

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