Find the value of the integral ∫(2x + 1)dx from 0 to 2. (2020)

Practice Questions

Q1
Find the value of the integral ∫(2x + 1)dx from 0 to 2. (2020)
  1. 6
  2. 4
  3. 5
  4. 3

Questions & Step-by-Step Solutions

Find the value of the integral ∫(2x + 1)dx from 0 to 2. (2020)
  • Step 1: Identify the integral you need to solve, which is ∫(2x + 1)dx.
  • Step 2: Find the antiderivative of the function (2x + 1). The antiderivative is x^2 + x.
  • Step 3: Set up the definite integral by evaluating the antiderivative from the lower limit (0) to the upper limit (2).
  • Step 4: Substitute the upper limit (2) into the antiderivative: (2^2 + 2) = 4 + 2 = 6.
  • Step 5: Substitute the lower limit (0) into the antiderivative: (0^2 + 0) = 0.
  • Step 6: Subtract the value from the lower limit from the value from the upper limit: 6 - 0 = 6.
  • Step 7: The final answer for the integral ∫(2x + 1)dx from 0 to 2 is 6.
  • Definite Integral – The process of calculating the area under a curve defined by a function over a specific interval.
  • Fundamental Theorem of Calculus – Relates differentiation and integration, allowing the evaluation of definite integrals using antiderivatives.
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