## anonymous one year ago Help on what this means

1. anonymous
2. anonymous

What does d^2/dx^2 mean.

3. freckles

4. anonymous

5. freckles

$\frac{d^2f}{dx^2}=f''(x)$

6. freckles

d^2/dx^2 means to find the second derivative

7. anonymous

Oh, it's just the second derivative?

8. anonymous

That's easy enough.

9. anonymous

Thank you!

10. anonymous

11. freckles

yep for example: $\frac{d^2}{dx^2} (x^4+x^3+2x+1) =\\ \frac{d}{dx}(4x^3+3x^2+2)=12x^2+6x$

12. anonymous

Okay, I know how to do that, I was just confused on what that meant, I'm used to seeing y'' which is why I was confused.

13. freckles

yea I hated that notation at first but then it grew on me a little

14. anonymous

Okay, thanks again!