Question 152876
If you graph something like {{{y=2^x}}}, you get 


 
{{{ drawing(500, 500, -10, 10, -10, 10,
 graph( 500, 500, -10, 10, -10, 10,2^x)

)}}} Graph of {{{y=2^x}}}



From the graph, notice that x doesn't cross the x-axis. So this means that the range of any standard exponential function in the form of {{{y=ab^x}}} is *[Tex \LARGE \left(0,\infty\right)]