# Thread: Is this function even viable?

1. ## Is this function even viable?

Calculate $\displaystyle h(5)$ when you know that $\displaystyle h(x+2)=x^2+3x+1$ is this even possible? It's in my text book.

Thanks!

2. ## Re: Is this function even viable?

$\displaystyle h(5)=h(3+2)=3^2+3 \times 3 + 1$

3. ## Re: Is this function even viable?

Originally Posted by a tutor
$\displaystyle h(5)=h(3+2)=3^2+3 \times 3 + 1$
Well now I feel stupid.

4. ## Re: Is this function even viable?

I too feel stupid struggling with the stuff I'm trying to learn.

5. ## Re: Is this function even viable?

Originally Posted by Paze
Well now I feel stupid.
Which option is stupid: Not posting the question or posting it? I vote for not posting.

-Dan

6. ## Re: Is this function even viable?

Originally Posted by topsquark
Which option is stupid: Not posting the question or posting it? I vote for not posting.

-Dan
I suppose you are right, Dan. I did learn from it and that's all that matters.