Question

Descrieți printr-un tabel funcţia:
a) f:{-3, -2,0, 1, 3, 5} →Z, f(x)=2x +4;
b) f:{-3, -2,-1, 0, 1, 2, 3} →N, f(x) = x 1;
c) f: {xe N - 2x29} → Z, f(x)= x² +1.​

Answer 1

Răspuns:

a) f(x)=2x +4

f:{-3, -2,0, 1, 3, 5}

f (-3)=2×(-3)+4

= -6+4

= -2

f (-2)=2×(-2)+4

=-4+4

=-1

f (0)=2 ×0+4

=0+4

=4

f (1)=2×1+4

=2+4

=6

f (3)=2×3+4

=6+4

=10

f (5)=2×5+4

=10+4

=14