R = S-a/S ---- solve for S

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- Sep 19th 2005, 11:40 AMUKMUGFormula
R = S-a/S ---- solve for S

- Sep 19th 2005, 01:17 PMrgep
Multiply through by S: SR = S^2 - a and this is a quadratic, S^2 - R.S - a = 0, in S which you could solve by the formula.