Engineering Board Exam Reviewer · Indefinite Integrals - Basic Formulas · medium

Evaluate: 1 2≤ft(x ) 2≤ft(x ),dx

1. ≤ft(x ) + ≤ft(x )+C
2. ≤ft(x ) - ≤ft(x )+C
3. - ≤ft(x ) + ≤ft(x )+C
4. - 2 ≤ft(x )+C

Answer

B. ≤ft(x ) - ≤ft(x )+C

Solution

Write 1= 2x+ 2x: 1/ 2x 2x=1/ 2x+1/ 2x= 2x+ 2x. Integrating gives x- x+C.

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