A. ln|2x+1| / 2+C
ExplanationStep 1: Identify the concept: substitution. Step 2: Put u=2x+1, then du=2dx. Hence the integral is ln|2x+1|/2+C. Step 3: Exam tip: For a linear denominator, divide by the coefficient.
Step 1: अवधारणा substitution है। Step 2: u=2x+1 लेने पर du=2dx। इसलिए integral ln|2x+1|/2+C है। Step 3: याद रखें: Linear denominator में coefficient से divide करें।
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