# Thread:

1. ## Odd Polynomial Functions

Prove algebraically and explain grahically why a polynomial that is an odd function is no longer an odd function when a non-zero constant is added. Provide examples.

Thanks in advance :P

2. Originally Posted by ahling
Prove algebraically and explain grahically why a polynomial that is an odd function is no longer an odd function when a non-zero constant is added. Provide examples.

Thanks in advance :P
If a polynomial P is an odd function, then P(-x)=-P(x).

So if you add a constant, say m, then let Q(x)=P(x)+m.
The thing is now to prove that Q is not odd.

Q(-x)=P(-x)+m=-P(x)+m $\neq$ -Q(x)=-(P(x)+m)

Do you quite understand ?

Graphically, adding a constant means to level up (or down) the curve. Will it still be symmetric wrt the center of the graph ?
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