Evaluate the integral ∫ (4x^3 - 2x) dx.

Practice Questions

Q1
Evaluate the integral ∫ (4x^3 - 2x) dx.
  1. x^4 - x^2 + C
  2. x^4 - x^2
  3. x^4 - x^2 + 2C
  4. 4x^4 - x^2 + C

Questions & Step-by-Step Solutions

Evaluate the integral ∫ (4x^3 - 2x) dx.
  • Step 1: Identify the integral you need to evaluate, which is ∫ (4x^3 - 2x) dx.
  • Step 2: Break the integral into two parts: ∫ 4x^3 dx and ∫ -2x dx.
  • Step 3: For the first part, ∫ 4x^3 dx, use the power rule of integration. The power rule states that ∫ x^n dx = (1/(n+1))x^(n+1) + C. Here, n = 3, so you get (4/(3+1))x^(3+1) = (4/4)x^4.
  • Step 4: For the second part, ∫ -2x dx, again use the power rule. Here, n = 1, so you get (-2/(1+1))x^(1+1) = (-2/2)x^2.
  • Step 5: Combine the results from Step 3 and Step 4. You have (4/4)x^4 - (2/2)x^2.
  • Step 6: Simplify the expression. (4/4)x^4 becomes x^4 and (-2/2)x^2 becomes -x^2.
  • Step 7: Add the constant of integration, C, to the final result. The final answer is x^4 - x^2 + C.
  • Integration – The process of finding the integral of a function, which represents the area under the curve of that function.
  • Power Rule for Integration – A rule that states the integral of x^n is (x^(n+1))/(n+1) + C, applicable for n ≠ -1.
Soulshift Feedback ×

On a scale of 0–10, how likely are you to recommend The Soulshift Academy?

Not likely Very likely