C-09-Q108mediumsingle_mcqDomain of the exponential function f(x)=axf(x) = a^xf(x)=ax is:a(0,∞)(0, \infty)(0,∞)b(−∞,0)(-\infty, 0)(−∞,0)c(−∞,∞)(-\infty, \infty)