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Ierofanga [76]
3 years ago
10

Given the exponential equation 3x = 243, what is the logarithmic form of the equation in base 10?

Mathematics
1 answer:
weeeeeb [17]3 years ago
6 0
The answer is x= \frac{log_{10} (243 )}{log_{10} (3 )}

3^{x} =243
Logarithm both sides of the equation:
log_{10} (3^{x} ) = log_{10} (243 )
Since: log (a^{b}) = b*log(a), then: log_{10} (3^{x} ) =x*log_{10} (3 )
Back to our equation:
log_{10} (3^{x} ) = log_{10} (243 ) \\ 
x*log_{10} (3 ) = log_{10} (243 ) \\ 
x= \frac{log_{10} (243 )}{log_{10} (3 )}



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