Jawabanmu

2014-09-09T19:48:19+07:00
3log5=3m

9log15 = 9log(5 . 3) = 9log5+9log3

=   3^{2} _{log( \sqrt{5})2}  +  9_{log 9^{1/2}}  =  3_{log 5^{1/2} } +1/2= 1/2 . 3log5 +1/2=1/2. 3m+1/2

=3m/2+1/2