How do you solve for #log_9 27 = x#?

2 Answers

It is

#x=log_9 27=log_9 3^3=3*log3/log9=3*(log3/log3^2)=3/2#

Finally #x=3/2#

Nov 25, 2015

I found: #x=3/2#

Explanation:

We can use the definition of log:
#log_bx=a->x=b^a#
and write:
#27=9^x# that we can write as:

#3^3=3^(2x)#
for the two terms to be equal also the exponents must be equal, so:
#3=2x#
and:
#x=3/2#