1.

The value of `log ab- log|b|=`A. log aB. `log|a|`C. `-log a`D. none of these

Answer» Correct Answer - B
log ab is defined if ` ab gt 0` or a and b have the same sign.
Case (i): a, `b gt 0`
` rArr log ab - log|b| = log a + log b - log b = log a` …(i)
Case (ii): ` a, b lt 0`
` rArr log ab - log|b| = log (-a) + log (-b) - log (-b) `
` = log (-a)` ...(ii)
From Eqs. (i) and (ii), we have
` log ab - log|b| = log |a|`.


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