If f(x) = 5x^2 - 3x + 7, what is f''(x)? (2020)

Practice Questions

Q1
If f(x) = 5x^2 - 3x + 7, what is f''(x)? (2020)
  1. 10
  2. 0
  3. 5
  4. 3

Questions & Step-by-Step Solutions

If f(x) = 5x^2 - 3x + 7, what is f''(x)? (2020)
  • Step 1: Start with the function f(x) = 5x^2 - 3x + 7.
  • Step 2: To find the first derivative f'(x), use the power rule. The derivative of 5x^2 is 10x, and the derivative of -3x is -3. The constant 7 has a derivative of 0.
  • Step 3: Combine the results from Step 2 to get f'(x) = 10x - 3.
  • Step 4: Now, to find the second derivative f''(x), take the derivative of f'(x). The derivative of 10x is 10, and the derivative of -3 is 0.
  • Step 5: Combine the results from Step 4 to get f''(x) = 10.
  • Differentiation – The process of finding the derivative of a function, which measures how the function changes as its input changes.
  • Second Derivative – The derivative of the first derivative, which provides information about the curvature or concavity of the original function.
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