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Which of the following expressions is equivalent to the logarithmic expression below?

[tex]\[ \ln 5 + \ln 3 \][/tex]

A. \(\ln 3^5\)

B. \(\ln 5^3\)

C. \(\ln 15\)

D. [tex]\(\ln 8\)[/tex]

Sagot :

To determine which of the provided expressions is equivalent to \(\ln 5 + \ln 3\), let's use logarithmic properties to simplify and analyze the expression step-by-step. Specifically, we will use the logarithm product rule, which states:

[tex]\[ \ln(a) + \ln(b) = \ln(a \cdot b) \][/tex]

Given the expression \(\ln 5 + \ln 3\), we apply the product rule as follows:

[tex]\[ \ln 5 + \ln 3 = \ln(5 \cdot 3) \][/tex]

Now, we calculate the product inside the logarithm:

[tex]\[ 5 \cdot 3 = 15 \][/tex]

Therefore, we can rewrite the expression as:

[tex]\[ \ln 5 + \ln 3 = \ln 15 \][/tex]

Hence, the equivalent expression is:

[tex]\[ \ln 15 \][/tex]

Among the given options, this corresponds to option C:

C. \(\ln 15\)

After verifying \(\ln 5 + \ln 3\) and finding the equivalent logarithmic expression to be \(\ln 15\), also we notice the numerical verification aligns:
- Both \(\ln 5 + \ln 3\) and \(\ln 15\) have the same numerical value, which reinforces our conclusion.

Therefore, the correct answer is:

C. [tex]\(\ln 15\)[/tex]