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## Main Question or Discussion Point

How can I find the values for ψ that the following sqaure root equals to a rational number?:

√(87600-1.44ψ^2)

Also, I don't want ψ to be greater than 10. What's the procedure to find the answer?

√(87600-1.44ψ^2)

Also, I don't want ψ to be greater than 10. What's the procedure to find the answer?