bantu kerjain 2 nomer ini ya ka

No.3
log 3 = 0,477
log 4 = 0,602

maka
log 360 = log [tex]3^{2} [/tex].4.10
             = 2log 3 + log 4 + log 10
             = 2 x 0,477 + 0,602 + 1
             = 2,556

No. 4
[tex] \frac{log 10}{log 2}- \frac{log 6}{log 2}- \frac{log 15}{log 2}+ \frac{log 144}{log 2}[/tex]
= [tex] \frac{log 10 - log 6 - log 15 + log 144}{log 2} [/tex]
= [tex] \frac{log(10:6:15.144)}{log 2} [/tex]
[tex] =\frac{log 16}{log 2} \\ =\frac{4log2}{log 2} \\ =4[/tex]