Question

Calcule os Logaritmos:
a) Log 5.3 com base 7
b) Log 12/5 com base 2

Answer 1

A) log5.3 (7)

Log15 (7)= log5.3 (7)

Log5 (7) + log3 (7)

Log5/log7 +log3/log7

Log5+log3/log7
0,69+0,47/0,84= 1,16/0,84=1,38


B)

Log12/5 (7) =log12 (7) - log5 (7)

Log12/log7-log5/log7
Log12-log5/log7
1,07-0,69/0,84=0,38/0,84=0,45

Espero ter ajudado!