Evaluate the integral of (6x^2+2x) dx from x = 0 to x = 2.
Answer and explanation
Correct answer: D. 20
- Step 1: Find the antiderivative: 2x^3+x^2.
- Step 2: Evaluate it at 2 and subtract its value at 0 (which is 0).
- Step 3: Result: 20.
Answer
20.
Why not the others: '28' evaluates the integrand at the upper limit instead of integrating; '22' adds the upper limit to the antiderivative value; '56' integrates but forgets to divide by the new exponents 3 and 2.
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