Math Problem Statement

7^x = 8^3 होने पर x का मान कितना होगा?

Solution

The image contains a mathematical problem written in Hindi. The equation is:

7x=83 होने पर x का मान कितना होगा?7^x = 8^3 \text{ होने पर } x \text{ का मान कितना होगा?}

Translation:

Given that 7x=837^x = 8^3, what is the value of xx?

Solution:

To solve for xx, we start with the given equation:

7x=837^x = 8^3

First, simplify 838^3:

83=5128^3 = 512

So the equation becomes:

7x=5127^x = 512

Now, to find xx, we take the logarithm (log base 7) of both sides:

x=log7512x = \log_7{512}

To calculate xx, we'll use the change of base formula:

x=log512log7x = \frac{\log{512}}{\log{7}}

Now we can compute the logarithms:

log5122.7095andlog70.8451\log{512} \approx 2.7095 \quad \text{and} \quad \log{7} \approx 0.8451

So:

x2.70950.84513.206x \approx \frac{2.7095}{0.8451} \approx 3.206

Thus, the value of xx is approximately 3.2063.206.

Would you like more details or have any questions?


Related Questions:

  1. How would the calculation change if the equation was 7x=937^x = 9^3?
  2. Can you solve 7x=5127^x = 512 using natural logarithms?
  3. What is the general method to solve equations of the form ax=ba^x = b?
  4. How does the change of base formula work in logarithms?
  5. How do logarithms help in solving exponential equations?

Tip: Understanding the change of base formula can be very helpful when dealing with logarithms of different bases!

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Math Problem Analysis

Mathematical Concepts

Exponential Equations
Logarithms
Algebra

Formulas

7^x = 8^3
Change of base formula: log_a(b) = log(b) / log(a)

Theorems

Change of base formula
Exponentiation

Suitable Grade Level

Grades 9-12