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adelina 88 [10]
3 years ago
9

Using the properties of exponents and logarithms, find the value of x in 19 + 2 ln x = 25.

Mathematics
2 answers:
REY [17]3 years ago
8 0
19+2\ln x=25\ \ \ |-19\\\\2\ln x=6\ \ \ |:2\\\\\ln x=3\iff x=e^3

\text{Used de.finition of the logarithm:}\ \ \ \log_ab=c\iff a^c=b



vivado [14]3 years ago
3 0

Answer:

x=e^3

Step-by-step explanation:

  • The first step is to pass 19 to subtract the other side

2\cdot ln(x)=25-19

2\cdot ln(x)=6

  • The second step is to pass the 2 to divide the other side

ln(x)=\frac{6}{2}

ln(x)=3

  • The final step is take into account the general form of logarithmic expression.

ln(a)=b    ------->     e^b=a

According to the the previous, if we have ln(x)=3, the value of x would be:

e^3=x

x=e^3

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