Question

1 - Sendo log a=4, log c=6 e log d=-1, calcule o valor de log ac/d.

Answer 1

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$log a=4 \\ log c=6 \\ log d=-1 \\ \\ log \frac{a.c}{d} \\ \\ loga+log c-log d= \\ \\ 4+6-(-1)= \\ \\ 10+1=11$