What is the smallest distance between the origin and a point on the graph of $y=\dfrac{1}{\sqrt{2}}\left(x^2-3\right)$?

The smallest distance is sqrt(13)/5, so a + b = 18.

I entered that answer and it said it's wrong.

Guest is probably telling you that you need to do your own homework.

I have deleted most of your questions.

Please stop using this as a cheat site.

People here want to help others, they do not want to do all your homework for you.