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View Full Version : Stupid q, but is my transposition of formulae correct


confusedkarl
Jun 16, 2008, 10:52 AM
Is this transpostion/rearrangement to make h subject correct?

question: I = 1
---- bh^3
12

My answer: h = (I12/b) ^ 1/3


Please help me. Thanks

Capuchin
Jun 16, 2008, 11:12 AM
Looks right to me

confusedkarl
Jun 16, 2008, 11:20 AM
thank you. How about this.

(R+wL)(R-wL)

= R^2 -wL

galactus
Jun 16, 2008, 12:35 PM
That is the difference of two squares.

Should be R^{2}-(wL)^{2}