[math]f(x)= e^x[/math] .Can anyone explain why its domain is [math]\mathbb{R}[/math] and range is [math](0, \infty)[/math]?
If [math]1\circ4=5[/math] and [math]2\circ5=12[/math] and [math]3\circ6=21[/math] then what is [math]8\circ11[/math]? Fun…