solve for x:

a)e^x=5

b) lnx=2

2 answers

Take the ln of each side;
x=ln5
take the antiln of each side.
x=e^2
These equations can be solved if we understand the relationship between ex and log(x).
if ex = y, then log(y)=x
and vice versa.

Example:
ex=3, then x=ln(3)=1.0986
If ln(x)=4, then x=e4=54.598

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