Find the derivative of f(x) = x^5 + 3x^3 - 2x.

Practice Questions

Q1
Find the derivative of f(x) = x^5 + 3x^3 - 2x.
  1. 5x^4 + 9x^2 - 2
  2. 5x^4 + 6x^2 - 2
  3. 3x^2 + 5x^4 - 2
  4. 5x^4 + 3x^2 - 2

Questions & Step-by-Step Solutions

Find the derivative of f(x) = x^5 + 3x^3 - 2x.
  • Step 1: Identify the function you want to differentiate, which is f(x) = x^5 + 3x^3 - 2x.
  • Step 2: Apply the power rule for differentiation. The power rule states that if you have x^n, the derivative is n*x^(n-1).
  • Step 3: Differentiate each term in the function separately.
  • Step 4: For the first term x^5, apply the power rule: the derivative is 5*x^(5-1) = 5x^4.
  • Step 5: For the second term 3x^3, apply the power rule: the derivative is 3*3*x^(3-1) = 9x^2.
  • Step 6: For the third term -2x, apply the power rule: the derivative is -2*1*x^(1-1) = -2.
  • Step 7: Combine all the derivatives from the previous steps: f'(x) = 5x^4 + 9x^2 - 2.
  • Differentiation – The process of finding the derivative of a function, which represents the rate of change of the function with respect to its variable.
  • Power Rule – A rule used in differentiation that states if f(x) = x^n, then f'(x) = n*x^(n-1).
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