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September 20, 2014

September 20, 2014

Posted by **Stanley** on Wednesday, March 14, 2012 at 7:29am.

- math -
**Reiny**, Wednesday, March 14, 2012 at 8:06amsquare both sides

t^2 = v/(1/f + 1/g)

t^2 = v/( (f+g)/(fg) )

t^2 = vfg/(f+g)

ft^2 + gt^2 = vfg

ft^2 - vfg = -gt^2

f(t^2 - vg) = -gt^2

f = -gt^2/(t^2 - vg) or gt^2/(vg - t^2)

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