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I need to square the voltage source as input to do a calculation. I also need to get the squared root of the voltage input. Anyone get any suggestions?

Take a look at https://www.circuitlab.com/circuit/z9ab3x8e65wm/square-root/ This gives one way to do it which may suit your needs. There may be other ways to do it.

I think this is closer to the original question https://www.circuitlab.com/circuit/qr25v9awh6xg/square-root/

Thank you very much, Fox. I also want to have an exponential or Log V input. Do you know there is a way to do that?

Take a look at https://www.circuitlab.com/docs/expressions/ It has a list of math functions you can use including LOG and LN