Question

When I draw multiple functions like exp,2^x,3^x, is it possible to generate a label of each function?

My code now:

  Plot[{Exp[x], 2^x, 3^x}, {x, -5, 2}, AspectRatio -> Automatic, PlotStyle -> {Red, Green, Blue}]

What I mean is generate 3 labels in this case to tell the user what function it is.

Such as:

How do you generate this?

Answer 1

Perhaps this works: Use Tooltip in Plot to generate a Graphics object with tooltips. Then rewrite the tooltip to place the desired text in the desired location:

Plot[
 Tooltip@{Exp[x], 2^x, 3^x}, {x, -5, 2},
 AspectRatio -> Automatic,
 PlotStyle -> {Red, Green, Blue},
 PlotRange -> All,
 PlotRangePadding -> 1.1] /.
{
 Tooltip[{_, color_, line_}, tip_]
 :>
 {Text[Style[tip, 14], {.25, 0} + line[[1, -1]]], color, line}
}