# f(x+h)

#### dwatkins741

I have the problem
For the function $$\displaystyle f(x) = x^2+3x+1$$ find f(x+h)

Is the answer $$\displaystyle x(x+3+(1/x))$$ ?

I don't really see where h comes from.
Thanks.

#### Plato

MHF Helper
I have the problem
For the function $$\displaystyle f(x) = x^2+3x+1$$ find f(x+h)
If $$\displaystyle f(x)=x^2+3x+1$$ then
$$\displaystyle f(x+h)=(x+h)^2+3(x+h)+1=x^2+2xh+h^2+3x+3h+1$$.

dwatkins741

#### dwatkins741

Got it

Now I get it. Thanks.