Question

Найдите значение выражения 3x-2|y-1| при x = -1, y = -4.

Answer 1

3*(-1)-2*|-4-1|=-3-2*5=-3-10=-13

Answer 2

$3x-2|y-1|$

При $\left \{ {{y-1\ \textgreater \ =0} \atop {3x-2(y-1)}} \right. \left \{ {{y\ \textgreater \ =1} \atop { \ 3x-2y+2$  $\left \{ {{y\ \textgreater \ =1} \atop {3(-1)-2(-4)+2=-3+8+2=7}} \right.$
При $\left \{ {{y-1\ \textless \ 0} \atop {3x-2(y-1)}} \right. \left \{ {{y\ \textless \ 1} \atop {3x-2(1-y)}} \right. \left \{ {{y\ \textless \ 1} \atop 3x-2+2y = -3-2-8=-13$