Question

Explicati modulul
b) |x-3|,daca x∠2
c) |7-x|,daca x∠ -1
d) |8-x|,daca x e mai mare decit 8
Dau coroana

Answer 1

b) |x-3|,daca x<2  ⇒x-2<0  |x-3|=-(x-3)=3-x

c) |7-x|,daca x< -1  ⇒7-x>0  |7-x|=7-x

d) |8-x|,daca x> 8 ⇒8-x<0  |8-x|=-(8-x)=x-8