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As vrea 10 exemple de functii injective.

Răspuns :

f(x)=2x+1
f(x)=sin(x) f:[0,pi/2]
f(x)=e^x
f(x)=lg(x) f:(0, infinit)
f(x)=radical din x, f:(0, infinit)
f(x)=5-7x
f(x)=(1/2)^x
f(x)=1/x f:(0,infinit)
f(x)=tg(x) f:(-pi/2, pi/2)
f(x)=x^2 f:(0, infinit)