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Question:
Does the point of oblique inflection in a polynomial function equal to when the gradient is the greatest?



Replies:
By "oblique inflection" I assume you mean a point of inflection where the slope (gradient) is not zero. If this is so it can go either way. With a graph it's easy to see. Let us see if we can "talk it through". Starting from left and going right, if a positive gradient (slope) decreases to a non-zero positive value, then starts to increase again, then the slope has a minimum, but non-zero positive value at the point of inflection. On the other hand, again starting from left and moving right, if negative slope decreases to a smaller but non-zero slope and then starts to become more negative again, the slope has a maximum, but negative value, at the point of inflection.

Vince Calder



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