Having real pains too with this one.

Please see attachement - cant use the equation editior on here

Sorry.

RC

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- December 11th 2007, 10:46 AMrichard_clog problem I am struggling with
Having real pains too with this one.

Please see attachement - cant use the equation editior on here

Sorry.

RC - December 11th 2007, 01:26 PMearboth
Hello,

I'm going to isolate Z. I assume that l = L and that ln() = Ln(). You have:

First multiply by . Afterwards expand the bracket at the RHS of the equation. You'll get:

Subtract the first summand of the RHS of the equation:

And now de-logarithmize(?):

And now try to simplify this nightmare of a solution.