Find the second derivative of f(x) = x^4 - 4x^3 + 6x^2.

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Q: Find the second derivative of f(x) = x^4 - 4x^3 + 6x^2.

Solution: First derivative f'(x) = 4x^3 - 12x^2 + 12. Second derivative f''(x) = 12x^2 - 24.

Steps: 14

Step 1: Start with the function f(x) = x^4 - 4x^3 + 6x^2.
Step 2: To find the first derivative, use the power rule. The power rule states that if f(x) = x^n, then f'(x) = n*x^(n-1).
Step 3: Apply the power rule to each term in f(x):
- For x^4, the derivative is 4*x^(4-1) = 4x^3.
- For -4x^3, the derivative is -4*3*x^(3-1) = -12x^2.
- For 6x^2, the derivative is 6*2*x^(2-1) = 12x.
Step 4: Combine the derivatives from each term to get the first derivative: f'(x) = 4x^3 - 12x^2 + 12x.
Step 5: Now, find the second derivative by differentiating f'(x).
Step 6: Again, apply the power rule to each term in f'(x):
- For 4x^3, the derivative is 4*3*x^(3-1) = 12x^2.
- For -12x^2, the derivative is -12*2*x^(2-1) = -24x.
- For 12x, the derivative is 12.
Step 7: Combine the derivatives from each term to get the second derivative: f''(x) = 12x^2 - 24x + 12.
Step 8: The final answer for the second derivative is f''(x) = 12x^2 - 24x + 12.