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Homework Statement
exponential integration formula [itex]∫a^{u} du = \frac {a^{u}}{ln(a)} +c [/itex]
∫ [itex]\left(\frac{2}{3}\right)^{x} dx[/itex]
Homework Equations
[itex]\frac{}{}[/itex]
The Attempt at a Solution
∫ [itex]\left(\frac{2}{3}\right)^{x} dx[/itex]
= [itex]\frac{\left(2/3 \right)^{x}}{ln(2)/ln(3)}[/itex] <<< this is my answer ?= - [itex]\frac{\left(2/3 \right)^{x}}{ln(3)/ln(2)}[/itex] << this answer from wolframalpha why ln(3)/ln(2) not ln(2)/ln(3) and where the minus comes from
please advisethank you
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