find the exact value of the following expression?

0 ⤊

log= log base 2

2^(log3+log5)

2006-09-17 05:18:22 · 2 answers · asked by infiniti1113 3 in Education & Reference ➔ Homework Help

2^(log3+log5)=2^(log15)
let 2^log15=x
log x to the base 2 =log 15 to the base 2 so x=15

2006-09-17 05:23:49 · answer #1 · answered by raj 7 · 0⤊ 0⤋

remember that log 3 + log 5 = log 15.
So you have 2^(log_2 (15) ) = 15.

2006-09-17 12:25:47 · answer #2 · answered by steiner1745 7 · 0⤊ 0⤋