n * ln ( a ) = ln ( a ^ n )
2 ln ( x ) = ln ( x ^ 2 )
3 ln ( y ) = ln ( y ^ 3 )
( 1 / 2 ) ln ( z ) = ln [ z ^ ( 1 / 2 ) ] = ln [ sqrt ( z) ]
ln ( a ) + ln ( b ) = ln ( a * b )
ln ( a ) - ln ( b ) = ln ( a / b )
In this case:
2 ln ( x ) - 3 ln ( y ) + ( 1 / 2 ) ln ( z ) =
2 ln ( x ) + ( 1 / 2 ) ln ( z ) - 3 ln ( y ) =
ln [ x ^ 2 * sqrt ( z ) / y ^ 3 ]
i have write the equation as a single logarithm
2 lnx-3 lny+1/2 lnz
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