Question

is f(x)= e^x onto (for all real numbers) explain

Answer 1

When a function is onto, this means that the range is the largest set possible (in this case, the set of all real numbers)


But the range of e^x is [0, infinity), so this function is NOT onto.

Answer 2

to be pedantic, the range is
\[(0,\infty)\]

Answer 3

oh right, my bad