Hey, In one of my text books that following equation was written: My question is .. Where did the x (In the red circle) go to ? Why is it ignored ? Thanks a lot !
Follow Math Help Forum on Facebook and Google+
Originally Posted by MichaelEngstler Hey, In one of my text books that following equation was written: My question is .. Where did the x (In the red circle) go to ? Why is it ignored ? First it was not ignored. It is part of $dt=\dfrac{dx}{x}$. Note that the limits of integration also change.
Can you please explain why dt = dx/x ?
Originally Posted by MichaelEngstler Can you please explain why dt = dx/x ? $t = ln(x) \implies \dfrac{dt}{dx} = \dfrac{1}{x} \implies dt = \dfrac{dx}{x}.$
Originally Posted by MichaelEngstler Can you please explain why dt = dx/x ? $t=\ln(x)$ so $\dfrac{dt}{dx}=\dfrac{1}{x}$ so $dt=\dfrac{dx}{x}$
Thanks a lot
View Tag Cloud