Saturday

January 31, 2015

January 31, 2015

Posted by **Melinda** on Sunday, January 29, 2012 at 12:45pm.

1. solve x=log(base2)*1/8 by rewriting in exponential form.

2. Solve log(3x+1)=5

3. Solve log(base x)8=-1/2

- Precalculus -
**Damon**, Sunday, January 29, 2012 at 1:43pmx = log2 (1/2)^3

x = 3 log2 (1/2)

x/3 = log 2(1/2) = log 2 (1) - log2(2)

but log2 (1) = 0 and log 2 (2) = 1

so

x/3 = -1

x = -3

- Precalculus -
**Damon**, Sunday, January 29, 2012 at 1:45pmlog(3x+1)=5

I get we mean log base 10

10^log(3x+1) = 3x+1

so

3x+1 = 10^5

3 x = 10^5 -1 = 9999

x = 3333

- Precalculus -
**Damon**, Sunday, January 29, 2012 at 1:47pmlog(base x)8=-1/2

x^log(base x)8 = 8

so

8 = x^(-1/2) = 1/sqrt x

sqrt x = 1/8

x = 1/64

**Answer this Question**

**Related Questions**

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

math - Given that 2 log base2 (x+15) - log base2 x = 6 1.Show that x^2 -34x +225...

Algebra - In the logarithmic expression . . . log(base 4) 8 , how does the base ...

Precalculus-Verify - log(base2)x-log(base2)6= log(base2)5+ 2log(base2)3 log(x/6...

Algebra 2 - How would I solve the equation: log(base2)4 - log(base2)(x+3) = log(...

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

Algebra 2 - solve the equation: log(base2)^(x-3)log(base2)^5 = 2log(base2)^10 I ...

math - solve for x without using a calculator 5^(x+1) = 25 i know that x would ...

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

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