CBSE Class 12-science Answered
Sir,
Why is the exponential function 
an into function but not an onto function
an into function but not an onto function
Asked by Alekhya K | 30 Jun, 2014, 04:29: PM
Expert Answer
Consider the following graph:
A function f from X to Y is called onto if for all y in Y there is an x in X such that f (x) = y.
But from the graph it is clear that f(-3)=f(-4)=f(-5)=.....=0
Thus, it is not an onto function and hence it is an into function.
Answered by Vimala Ramamurthy | 01 Jul, 2014, 08:46: AM
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