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March 31, 2015

March 31, 2015

Posted by **jess** on Saturday, July 26, 2008 at 10:21am.

make f the subject of the formulae

thank you in advance!

- maths! -
**drwls**, Saturday, July 26, 2008 at 12:01pmCreate a common denominator for the right side

1/f = (v + u)/uv

Then just invert the fractions. (That is an algebraically allowed operation).

f = uv/(u + v)

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