Question

a)F: (-0.5;0.5;1;2;3;4;)------>R f(x)=2x-1
b)F:(-3;-2;-1;0;1.5;3)------->R g(x)=-2x+1

Answer 1

Explicație pas cu pas:

a) f(-0,5)= 2·(-0,5)-1= -1-1= -2

f(0,5)= 2·0,5-1= 1-1= 0

f(1)= 2·1-1= 2-1=1

f(2)= 2·2-1= 4-1= 3

f(3)= 2·3-1= 6-1= 5

f(4)= 2·4-1= 8-1= 7

b) g(-3)= -2·(-3)-1= 6-1= 5

g(-2)= -2·(-2)-1= 4-1= 3

g(-1)= -2·(-1)-1= 2-1= 1

g(0)= -2·0-1= 0-1= -1

g(1,5)= -2·(1,5)-1= -3-1= -4

g(3)= -2·3-1= -6-1= -7