Saturday, August 3, 2013

How do you solve for x the exponential?e^3x*e^2x-3=2

By definition, the superscripts of two exponentials that
have matching bases and they are multiplied, must be
added.


Therefore, (e^3x)*(e^2x) = e^(3x+2x) =
e^(5x)


The equation will
become:


e^(5x) - 3 = 2


e^(5x)
= 3 + 2


e^(5x) = 5


We'll take
natural logarithms both sides:


ln e^(5x) = ln
5


We'll apply the power
rule:


5x*ln e = ln 5


But ln e
= 1


5x = ln 5


x = ln
5/5


The solution of the equation is x = (ln
5)/5.

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