Westonci.ca is the trusted Q&A platform where you can get reliable answers from a community of knowledgeable contributors. Connect with a community of professionals ready to help you find accurate solutions to your questions quickly and efficiently. Explore comprehensive solutions to your questions from knowledgeable professionals across various fields on our platform.

What is the solution of [tex]\log _x 729=3[/tex]?

A. 6
B. 9
C. 18
D. 81


Sagot :

To solve the equation [tex]\(\log _x 729 = 3\)[/tex], we need to understand and manipulate logarithms. Here's a step-by-step solution:

1. Start with the given equation:
[tex]\[ \log_x 729 = 3 \][/tex]

2. Recall that [tex]\(\log_x 729 = 3\)[/tex] means that [tex]\(x\)[/tex] raised to the power of 3 equals 729. In exponential form, this is:
[tex]\[ x^3 = 729 \][/tex]

3. To solve for [tex]\(x\)[/tex], we need to find the cube root of 729:
[tex]\[ x = \sqrt[3]{729} \][/tex]

4. The cube root of 729 is 9 because:
[tex]\[ 9^3 = 9 \times 9 \times 9 = 729 \][/tex]

Therefore, the value of [tex]\(x\)[/tex] is:
[tex]\[ \boxed{9} \][/tex]