Question

( f(x)=left(x+frac{1}{2}right)^{2}+frac{3}{4} quad f: N rightarrow N )
min value of ( f(x) ) is ( frac{3}{4} )
( x_{1}+frac{1}{2}=pmleft(x_{2}+frac{1}{2}right) quad ) one -one
onto
( x_{1}, x_{2} in N )

# на опе по 15. Let f.N - N defined by f(x) = x² + x +1,x EN, then fis (a) One-one onto (6) Many one onto (C) One-one but not onto (d) None of these

Solution