Answer
$$x=1.386$$
Work Step by Step
$$e^x=4$$
- Draw the graph of the function $y= e^x$
- Draw the graph of the function $y=4$
- Trace the point of intersection of the 2 graphs, the $x$ value of which is the answer to the given equation.
Thus, from the graph, as the point of intersection is $(1.386,4)$, we conclude that $$x=1.386$$