Math Problem Statement

Solve logarithmic and exponential problems from the given image, involving properties of exponents and logarithms.

Solution

Let's go through each problem from the image you uploaded:

Problem 6:

The property of exponents given is alogb=ba^{\log_b} = b. The expressions listed need to be simplified based on this rule.

a. 100log8100^{\log 8}

Using the rule: 100log8=8100^{\log 8} = 8

b. 3232

This is already a simplified constant.

c. 2558+641525^{\frac{5}{8}} + 64^{\frac{1}{5}}

Breaking this into steps: 255/8=(52)5/8=55/4,641/5=225^{5/8} = (5^2)^{5/8} = 5^{5/4}, \quad 64^{1/5} = 2 So, the result is 55/4+25^{5/4} + 2.

d. 4log78=82log2+3log584^{\frac{\log 7}{8}} = 8^{\frac{2}{\log 2}} + 3^{\frac{\log 5}{8}}

This problem requires further simplification by applying the logarithmic properties and exponentiation rules.

Problem 7:

This problem involves logarithmic properties.

a. 12log128+2log927log46log13\frac{1}{2} \log 128 + 2 \log 9 - 27 \log 4 - 6 \log \frac{1}{3}

Using properties of logarithms (like nloga=logann \log a = \log a^n and loga+logb=log(ab)\log a + \log b = \log (a \cdot b)):

  • 12log128=log128\frac{1}{2} \log 128 = \log \sqrt{128}
  • 2log9=log922 \log 9 = \log 9^2

This can be simplified to a single logarithmic term.

b. Similar steps apply to this expression.

Problem 8:

These logarithmic equations must be converted to exponential form to solve for xx.

a. 2logx=32 \log x = 3

Exponential form: x2=103,x=1000x^2 = 10^3, \quad \therefore x = \sqrt{1000}

b. 3log(2x+1)=23 \log (2x + 1) = 2

Exponential form: (2x+1)3=102(2x + 1)^3 = 10^2

c. 14log(6x5)=1\frac{1}{4} \log (6x - 5) = -1

Exponential form: (6x5)1/4=101(6x - 5)^{1/4} = 10^{-1}

Would you like detailed steps for any of these?

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Exponents
Logarithms
Algebraic Simplification

Formulas

a^log_b = b
log_a (x * y) = log_a x + log_a y
log_a (x^n) = n * log_a x

Theorems

Properties of Exponents
Properties of Logarithms

Suitable Grade Level

Grades 10-12