Write the logarithm as a sum and/or difference of logarithms of a single quantity
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ln(exy/z) = ln(exy) - ln(z) [as ln(x/y) = ln(x) - ln(y) ]
= ln(e) + ln(x) + ln(y) - ln(z) [as ln(xy) = ln(x) + ln(y) ]
= 1 + ln(x) + ln(y) - ln(z) [ as ln(e) = 1 ]
= ln(e) + ln(x) + ln(y) - ln(z) [as ln(xy) = ln(x) + ln(y) ]
= 1 + ln(x) + ln(y) - ln(z) [ as ln(e) = 1 ]
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