[" प्रश्न 1.यदि फलन "f:N rarr N],[quad f(x)={[x+1,," यद्दि "x" विषम है "],[x-1,," यद्दि "x" सम है "]]

f: N rarr N , where f(x)=x-(-1)^(x) . Then f is

Let f:N rarr N given by f(x)=x+(-1)^(x+1), then

f:N to N, where f(x)=x-(-1)^(x) , Then f is

f:N to N, where f(x)=x-(-1)^(x) , Then f is

Let f: N rarr N be defined by f(x)=x^(2)+x+1 then f is

f : N to N : f (x) =x^(2) + x+ 1 is

Let f:N rarr N be defined by f(x)=x^(2)+x+1,x in N. Then is f is

Let f : N rarr N be defined by f(x)=x^(2)+x+1, x in N . Then f is

Show that f:N rarr N , given by f(x) = {:{(x+1, " if x is odd"),(x-1 , "if x is even"):} is both one - one and onto .