Explain exponential function Share with your friends Share 0 Aarushi Mishra answered this Exponential function is defined asf:ℝ→ℝ+fx=ax, where a>0 and a≠1. 'a' is a constant and a∈ℝE.g y=2x, y=10x, etcAs I have mentioned its domain is ℝ, i.e. -∞<x<∞ and its co doamin is ℝ+, i.e. y>0 co-domain is obvious as a>0 so a raised to any power will always give a positive number If a>1 then as you will increase the power of x the value of function will increase so it is increasing for all x if a>1.If 0<a<1 then as you will increase the power of x the value of function will decrease so it is decreasing for all x if 0<a<1.As x→∞, ax→∞ for a>1 and as x→-∞, ax→∞ for 0<a<1. So it is always a unbounded function.It has no zeros asax≠0 for any value of x as a>0 0 View Full Answer