Question

Jika 5 log 3 = a dan 3 log 4= b maka 4 log 15?

Answer 1

4 log 15
=4 log 3*5
=4log3+4log5
=(1/3log4)+(1/5log4)
=(1/b)+(1/ab)
=(a/ab)+(1/ab)
=(a+1)/ab