Question

Помогите пожалуйста!! 5.49 , 5.51

Answer 1

5.49f(-2)=-32+4+1=-27
f(1/2)=3/(0,25+0,5)=3/0,75=4
f(1/3)=1:4/3-1/27=3/4-1/27=(81-4)/108=77/108
f(-1)=2/1 =0=2
5.51
1)1-x≠0⇒x≠1
x+2≠0⇒x≠-2
3x-2≥0⇒x≥2/3
x∈[2/3;1) U (1;∞)
2)4x-1>0⇒x>1/4
1-x²≥0⇒-1≤x≤1
x∈(1/4;1]