Get expert insights and reliable answers to your questions on IDNLearn.com. Discover comprehensive answers from knowledgeable members of our community, covering a wide range of topics to meet all your informational needs.
Sagot :
To solve the logarithmic inequality [tex]\(\log_3(x + 1) \leq 2\)[/tex], we will proceed step-by-step:
1. Understanding the Inequality: We need to find the values of [tex]\(x\)[/tex] such that the logarithm to base 3 of [tex]\(x + 1\)[/tex] is less than or equal to 2.
2. Rewrite the Inequality: First, we rewrite the logarithmic inequality in the exponential form.
[tex]\[ \log_3(x + 1) \leq 2 \][/tex]
Recall the property of logarithms: [tex]\(\log_b(a) = c\)[/tex] is equivalent to [tex]\(b^c = a\)[/tex]. So,
[tex]\[ \log_3(x + 1) \leq 2 \implies x + 1 \leq 3^2 \][/tex]
3. Calculate the Exponentiation:
[tex]\[ 3^2 = 9 \][/tex]
Thus,
[tex]\[ x + 1 \leq 9 \][/tex]
4. Isolate [tex]\(x\)[/tex]:
[tex]\[ x \leq 9 - 1 \][/tex]
[tex]\[ x \leq 8 \][/tex]
5. Domain Consideration: Since the argument of a logarithm must be positive,
[tex]\[ x + 1 > 0 \][/tex]
[tex]\[ x > -1 \][/tex]
6. Combine the Results: The values of [tex]\(x\)[/tex] must satisfy both conditions:
[tex]\[ -1 < x \leq 8 \][/tex]
Therefore, the correct solution is:
[tex]\[ \boxed{-1 < x \leq 8} \][/tex]
Thus, the correct answer from the given choices is:
[tex]\[ \text{-1
1. Understanding the Inequality: We need to find the values of [tex]\(x\)[/tex] such that the logarithm to base 3 of [tex]\(x + 1\)[/tex] is less than or equal to 2.
2. Rewrite the Inequality: First, we rewrite the logarithmic inequality in the exponential form.
[tex]\[ \log_3(x + 1) \leq 2 \][/tex]
Recall the property of logarithms: [tex]\(\log_b(a) = c\)[/tex] is equivalent to [tex]\(b^c = a\)[/tex]. So,
[tex]\[ \log_3(x + 1) \leq 2 \implies x + 1 \leq 3^2 \][/tex]
3. Calculate the Exponentiation:
[tex]\[ 3^2 = 9 \][/tex]
Thus,
[tex]\[ x + 1 \leq 9 \][/tex]
4. Isolate [tex]\(x\)[/tex]:
[tex]\[ x \leq 9 - 1 \][/tex]
[tex]\[ x \leq 8 \][/tex]
5. Domain Consideration: Since the argument of a logarithm must be positive,
[tex]\[ x + 1 > 0 \][/tex]
[tex]\[ x > -1 \][/tex]
6. Combine the Results: The values of [tex]\(x\)[/tex] must satisfy both conditions:
[tex]\[ -1 < x \leq 8 \][/tex]
Therefore, the correct solution is:
[tex]\[ \boxed{-1 < x \leq 8} \][/tex]
Thus, the correct answer from the given choices is:
[tex]\[ \text{-1
We appreciate every question and answer you provide. Keep engaging and finding the best solutions. This community is the perfect place to learn and grow together. Your search for solutions ends here at IDNLearn.com. Thank you for visiting, and come back soon for more helpful information.