What is the minimum value of ?
Answer and explanation
Correct answer: C. -4
- Step 1: The derivative is , which is zero at . Step 2. Then , and the parabola opens upward so this is the minimum. Answer: -4. Why not the others: 0 is the value at x = 0, -2 is the x-coordinate error half way, and 4 is the value of the coefficient.
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