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Condense to a single logarithm: ln x +ln y − z

Question 12 options:

A) ln (x + y �� z )

B) ln xy∕z

C) (ln x)(ln y∕z)


D) ln xy∕ ln z

Respuesta :

Answer:

It is B

Step-by-step explanation:

[tex] ln(x) + ln(y) - ln(z) [/tex]

from law of logarithms:

[tex]{ \bf{ ln(a) + ln(b) = ln(ab) }} \\ and \\ { \bf{ ln(a) - ln(b) = ln( \frac{a}{b} ) }}[/tex]

so, in the question:

[tex] ln(x) + ln(y) - ln(z) \\ \\ = \{ ln(xy) - ln(z) \} \\ \\ = ln( \frac{xy}{z} ) [/tex]

The required logarithmic expression is ln(xy/z). Option B is correct.

Given that
To simplify ln x + ln y + ln z


What are functions?

Functions is the relationship between sets of values. e g y=f(x), for every value of x there is its exists in set of y. x is the independent variable while Y is the dependent variable.

What is a logarithmic function?

A logarithmic function can be defined as the function inverse of the exponential function is a logarithmic function.


In the question, an algebraic expression of the log function is given a simplified form of the expression to be determined using the logarithmic property.


Simplification,
= ln x +ln y + ln z
Since log A  + log B = log(A.B)
and log A - logB = log(A/B)

From above properties
= ln (x . y) - ln z
= ln [(x. y )/z]

Thus, the required logarithmic expression is ln(xy/z). Option B is correct.

Learn more about logarithmic function here:
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