Question

Oblicz x gdy:
a) log x =2log5
b)log x =log2+lo3+log4
c)logx=3log5- 1/2log9

Answer 1

A) log x = 2log5
log x = log(5^2)
log x = log 25
x = 25

b) log x = log2 + log3 + log4
log x = log(2*3*4)
log x = log 24
x = 24

c) log x = 3log5 - 1/2log9
log x = log(5^3) - log(9^1/2)
log x = log125 - log3
log x = log(125/3)
x = 125/3