Exponential and Logarithmic Equations solve the equation e^{3x/4}=10

nicekikah

nicekikah

Answered question

2021-08-11

Exponential and Logarithmic Equations solve the equation. Find the exact solution if possible. otherwise, use a calculator to approximate to two decimals.
e3x4=10

Answer & Explanation

Luvottoq

Luvottoq

Skilled2021-08-12Added 95 answers

Step 1
Law of logarithm:
Consider m to be a positive number, and mq1
Again consider M and N to be any real numbers with M>0 and N>0
The logarithm of power of a number is equal to the exponen times the logarithm of the number as,
logm(Mn)=NlogmM
Step 2 The given exponential equation is,
1) e3x4=10
Take logarithm on both side of the equation (1).
2) ln e3x4=ln10
Therefore, the equation (2) can be written as,
3x4ln e=ln10
3x4=ln10ln e
The above logarithm is a natural logarithm with base e.
The logarithm can be evaluated with a calculator as,
3x4=2.3021
3x=4(2.302)
3x=9.208
Further simplify the above equation 3x=9.208 as,
3x=9.208
x=9.2083
3.06
Thus, the solution of the exponential equation e3x4=10 is x=3.06

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