Question

Alguém me ajuda!

1) seja f(x) =|x-1/2| calcule
A) f(1/2)
B) f(0)
C) f|1/4|

2) resolva a equação |x-1|=1. Dicas 1) |x-1Z = x-1 ; se x> 1 ou x=0; e ll) |x-1|= -x+1 ; se x <1

3)sejam g(x) = x+1 e j(X) = 4x calcule
A) jo[g(1)]
B) go[g(-1)]

Answer 1

1) seja f(x) =|x-1/2| calcule
A) f(1/2) = I1/2 - 1/2I = I0I = 0
B) f(0) = I 0 - 1/2I = I -1/2I = 1/2
C) f|1/4| = I1/4 - 1/2I = I(1 - 2)/4I = I -1/4I = 1/4

2) |x-1|=1
x - 1 = 1    ou    x - 1 = -1
x = 1 + 1           x = -1 + 1
x = 2                 x = 0

3)sejam g(x) = x+1 e j(X) = 4x calcule
A) jo[g(1)] = j(1+1) = j(2) = 4.2 = 8
B) go[g(-1)]  = g(-1 + 1) = g(0) = 0 + 1 = 1