show that the function f: N to N defined by f(x) = 2x-1 is one to one – InterviewSolution

InterviewSolution

1.

show that the function f: N to N defined by f(x) = 2x-1 is one to one but not onto

Answer»

f(X)=2x-1; f(1)=2(1)-1=2-1=1; f(2)=2(2)+1=5;

f(2)=2(2)-1=4-1=3; f(3)=(3)^2-1=9-1=8

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