Question

Condensing Logarithmic Expression In Exercise,use the properties of logarithms to rewrite the expression as the logarithm of a single quantity.See example 4.
3 In x + 2 In y - 4 In z

Answer 1

We can use three rules to rewrite the logarithm:

Power rule: $\text{ln}(x^p)=p~\text{ln}(x)$

Product rule: $\text{ln}(xy)=\text{ln}(x)+\text{ln}(y)$

Quotient rule: $\text{ln}\frac{x}{y} = \text{ln}(x)-\text{ln}(y)$

Rewrite each part of the expression:

3 In x → ln(x^3)

2 ln y → ln(y^2)

4 ln z → ln(z^4)

According to the product rule, x^3 and y^2 get multiplied. According to the quotient rule, z^4 is being divided.

ln(x^3) + ln(y^2) - ln(z^4) → x^3*y^2/z^4

Therefore, the logarithm as a single quantity is $\text{ln}\frac{x^3y^2}{z^4}$

Best of Luck!

Answer 2

Answer:

$ln \frac{(x^3y^2)}{z^4}$

Step-by-step explanation:

$3 ln x + 2 ln y - 4 ln z$

m ln(x)= ln x^m

$3 ln x + 2 ln y - 4 ln z$

$ln x^3 +ln y^2 - ln z^4$

ln(mn)= ln m +ln n

$(ln x^3 +ln y^2)- ln z^4$

$(ln(x^3y^2)-ln z^4$

ln (m)-ln(n)= ln(m/n)

$ln \frac{(x^3y^2)}{z^4}$