Problem: If log(base a)5 = x and log (base a)7 = y, then log (base a) 1.4^(1/2) =?

The answer is 1/2 x (y-x)

(I hope you follow my notation) Thanks!

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- November 25th 2011, 04:41 PMbenny92000Solving for log
Problem: If log(base a)5 = x and log (base a)7 = y, then log (base a) 1.4^(1/2) =?

The answer is 1/2 x (y-x)

(I hope you follow my notation) Thanks! - November 25th 2011, 05:30 PMQuackyRe: Solving for log
We have and and a target of

Seems easiest to work backwards.

as

The task becomes getting in terms of and

Best approach?

Well,

Think about your log laws here. - November 26th 2011, 06:17 AMbenny92000Re: Solving for log
I used the subtraction rule to get 1/2(y-x)