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Mathematics 8 Online
OpenStudy (fanduekisses):

How do I solve for x here: ln(4x)=y

OpenStudy (big_mike_lifting):

Wait, is "In" part of the equation?

OpenStudy (fanduekisses):

yes

OpenStudy (big_mike_lifting):

Well, basically you have to solve the equation by rewriting in exponential form using the definition of a logarithm and simplifying. Would you like me to help you through the process?

OpenStudy (fanduekisses):

Yes please. It's been a while since I worked with logarithms and stuff. This is actually part of a calculus volume problem. I want to integrate in terms of y.

OpenStudy (big_mike_lifting):

Alright, well basically the definition of a natural logarithm states that e^y=x if and only if ln x=y

OpenStudy (big_mike_lifting):

So, because of this, you're able to convert it to \[4x=e^y\]

OpenStudy (big_mike_lifting):

After that, you simply divide each side by four, after that, let me know what you got.

OpenStudy (fanduekisses):

\[x=\frac{ e^y }{ 4 }\]

OpenStudy (big_mike_lifting):

You're the bomb man, that's correct. Nice work!

OpenStudy (fanduekisses):

yay! :D

OpenStudy (fanduekisses):

thanks

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