## anonymous 5 years ago how do you solve In(4x)=3 when you don't know what x is?

1. anonymous

you know that $ln(x)=y$ means $e^y=x$ so$ln(4x)=3$ means $e^3=4x$ $x=\frac{e^3}{4}$

2. anonymous

but is that your answer. or do you have to solve e^3/4?

3. anonymous

that is the answer unless you want a decimal approximation. if so use a calculator to get $\frac{e^3}{4}=5.021$

4. anonymous

okay. thats what i got. :)