Determine the maximum and minimum number of turning points for the function h(x) = -2x^4 – 8x^3 + 5x -6.

Maximum:3

Minimum:1

Is this a valid reason:

A quartic polynomial function has a 3 Turning points. The turning point is always 1 less than the degree. For example degree 4=3 TP, degree 5=4 turning points?

What about the minimum?

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