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notsponge [240]
3 years ago
9

Why is the answer D?

Mathematics
1 answer:
Sedaia [141]3 years ago
4 0

Step-by-step explanation:

Inflection points are where a function changes concavity (the second derivative changes signs).  At x = 4, f"(x) goes from negative to positive, so that's an inflection point.  However, at x = 8, we don't know if f"(x) changes signs or not.  So we can't say that that's an inflection point.

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Find the perimeter of rectangle whose length is 40 and the diagonal is 41 cm<br>​
Bond [772]

Answer:

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Step-by-step explanation:

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