# Need assistance with solving and explanation of expressions

#### michaelw7070

I came across this equation and not familiar with the expressions and the result. Please provide input for both. Thank you.

#### skipjack

Forum Staff
If you post the equation, perhaps we can help.

1 person

#### michaelw7070

I had attached this image before but looks like it didnt upload.

#### DarnItJimImAnEngineer

The compression artefacts make it hard to read. Does it say $\displaystyle V=\frac{n^2}{\pi^2}-1$?

If so, it means take any value of n, divide by pi, square the result, subtract one, and that gives you V. If you plot V(n), it looks like a parabola. If n is restricted to integer values, it looks like points on a parabola. What exactly is your question?

#### skipjack

Forum Staff
Was there any context that might hint at what it means?