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The graph of a polynomial functions generally has several extreme points and is a smooth continuous curve. If n is odd, then the ends point (i.e the right and left side) in opposite directions. If n is even, the ends point the in the same direction. Why?

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Answer:

Step-by-step explanation:

Because, if  even , for example x^2,  then the square of a negative and a positive x will always be positive.

For odd x, eg x^3 if x is negative x^3 is negative and if x is positive x^3 is positive.

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