Hint Needed

[fresh]

:grumpy:

So i have this question which seems easy enough but maybe iam not thinking in the right mind frame or something.

The question is, find the equation of a parobola which has a curvature of 4 at the origin.

Some sort of hint/push in the right direction would be appreciated. Thanks

[Tide]

If the slope is zero at the origin then the curvature is just the second derivative of the function.