Maths · Evaluation of definite integrals

Evaluate:

Evaluate: \( \int_{1}^{2} \log x d x \)

  • A. \( 2 \log 2-1 \)
  • B. \( \log 2-1 \)
  • C. \( 2 \log 2+1 \)
  • D. \( \log 2-2 \)

Step-by-step solution

∫ log x dx = x log x - x + C. Evaluating from 1 to 2: (2 log 2 - 2) - (1*0 - 1) = 2 log 2 - 2 + 1 = 2 log 2 - 1.
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