What is the integral of f(x) = 2x?

Practice Questions

Q1
What is the integral of f(x) = 2x?
  1. x^2 + C
  2. 2x^2 + C
  3. x^2 + 2C
  4. 2x + C

Questions & Step-by-Step Solutions

What is the integral of f(x) = 2x?
Correct Answer: x^2 + C
  • Step 1: Identify the function you want to integrate, which is f(x) = 2x.
  • Step 2: Recall the basic rule of integration for power functions: ∫x^n dx = (x^(n+1))/(n+1) + C, where n is a constant and C is the constant of integration.
  • Step 3: In our case, we have 2x, which can be rewritten as 2 * x^1.
  • Step 4: Apply the power rule: Increase the exponent by 1 (1 + 1 = 2) and divide by the new exponent (2).
  • Step 5: So, ∫2x dx = 2 * (x^2)/2 + C.
  • Step 6: The 2s cancel out, leaving us with x^2 + C.
  • Step 7: Write the final answer: ∫2x dx = x^2 + C.
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