Find the value of ∫ from 0 to 1 of (x^2 + 3x + 2) dx.

Practice Questions

Q1
Find the value of ∫ from 0 to 1 of (x^2 + 3x + 2) dx.
  1. 1
  2. 2
  3. 3
  4. 4

Questions & Step-by-Step Solutions

Find the value of ∫ from 0 to 1 of (x^2 + 3x + 2) dx.
  • Step 1: Identify the function to integrate, which is (x^2 + 3x + 2).
  • Step 2: Find the antiderivative of the function. The antiderivative of x^2 is (x^3)/3, the antiderivative of 3x is (3/2)x^2, and the antiderivative of 2 is 2x.
  • Step 3: Combine the antiderivatives to get the complete antiderivative: (x^3)/3 + (3/2)x^2 + 2x.
  • Step 4: Evaluate the antiderivative from 0 to 1. This means you will calculate the value of the antiderivative at 1 and then subtract the value at 0.
  • Step 5: Calculate the value at 1: (1^3)/3 + (3/2)(1^2) + 2(1) = (1/3) + (3/2) + 2.
  • Step 6: Calculate the value at 0: (0^3)/3 + (3/2)(0^2) + 2(0) = 0.
  • Step 7: Subtract the value at 0 from the value at 1: ((1/3) + (3/2) + 2) - 0.
  • Step 8: Simplify the expression: (1/3) + (3/2) + 2 = (1/3) + (3/2) + (6/3) = (1/3) + (9/6) = (2/6) + (9/6) = (11/6).
  • Step 9: Convert (11/6) to a decimal if needed: 11/6 = 1.8333... which is approximately 1.83.
  • Definite Integral – The process of calculating the area under a curve defined by a function over a specific interval.
  • Polynomial Integration – Applying the power rule for integration to polynomial functions.
  • Fundamental Theorem of Calculus – Connecting differentiation and integration, allowing evaluation of definite integrals using antiderivatives.
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