Sunday

February 1, 2015

February 1, 2015

Posted by **Anonymous** on Monday, January 14, 2013 at 8:42pm.

solve for the variable..

i got to the part as far as:

(log 4/log b) = 2

now i m stuck at how i can isolate the b. plz help!

- Trig -
**Reiny**, Monday, January 14, 2013 at 8:50pmlook at your right side

isn't log_{4}16 = 2 ???

so you have:

log_{b}64 - log_{b}16 = 2

log_{b}(64/16) = 2

log_{b}4 = 2

or

b^2 = 4

b = 2

from your:

log4/logb = 2

cross-multiply

log4 = 2logb

log4 = log b^2

then 4 = b^2

b = 2 , just like above

- Trig -
**Damon**, Monday, January 14, 2013 at 8:54pmlog b (4) = 2

b^log b( 4) = 4

so b^logb(4) = b^2

so

b^2 = 4

b = 2

- Trig -
**Anonymous**, Monday, January 14, 2013 at 8:55pmOhh alright! Thank you :)

**Answer this Question**

**Related Questions**

Algebra 2 - -Explain the difference between log base b (mn) and ( log base b of ...

Advanced Functions/ Precalculus Log - 1. Evaluate 4^(log base4 64) + 10^(log100...

math - Logarithm!!! Select all of the following that are true statements: (a) ...

check! - here is the question: log5(x-4)= log7x solve for x. These are just base...

Math - Help with these problems would be greatly appreciated: 1.Find the ...

math - write as a single logarithm: -2logbase3(1/x)+(1/3)logbase3(square root of...

math(Please help) - 1) use the properties of logarithms to simplify the ...

Precalc - 1. 1/3log base 8 of (x+1)=2log base 8 of 3-(2/3)log base 8 of (x+1) 2...

math - Use the Laws of logarithms to rewrite the expression log(base 2)(11x(x-9...

math - mathematically Evaluate without using tables 2 log base 10 raised 2 power...