Answer: 1/2.
- A 0
- B 1/2
- C 1
- D 2
Correct answer: B. 1/2
Explanation: Integral of x = x²/2 + C. Evaluate from 0 to 1: [1²/2] - [0²/2] = 1/2 - 0 = 1/2.
The exact area under the curve from a to b (shaded) is approximated by a few rectangles, the Riemann sum idea behind the definite integral.