Question

Ajutati-ma va rog la aceste 2 exercitii

Answer 1

Explicație pas cu pas:

E=|a-7|+2*|-3+b|-a+2b+6

a>=7 => a-7>=0

b<3 => b-3<0

=> E=a-7+2*(3-b)-a+2b+6 =>

E=a-7+6-2b-a+2b+6 => E=12-7=5

E=|x+y-8|+|x+y+3|

x€[-2,3] => -2<=x<=3

y€[-1,5] => -1<=y<=5

=> -3<=x+y<=8 => x+y-8<=0 si x+y+3>=0

=>E=8-x-y+x+y+3 => E=8+3 => E=11