Ответ:
E(y)= (-oo;9/8]
E(y)=(-oo;241/4]
1.a=3x-2x^2
2x^2-3x+a
D:9-8a>=0 <=> a ∈ (- oo;9/8]
2.a=30-11x-x^2
x^2+11x-30+a=0
D:121+120-4a>=0 <=> a ∈ (-oo;241/4]
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Ответ:
E(y)= (-oo;9/8]
E(y)=(-oo;241/4]
1.a=3x-2x^2
2x^2-3x+a
D:9-8a>=0 <=> a ∈ (- oo;9/8]
2.a=30-11x-x^2
x^2+11x-30+a=0
D:121+120-4a>=0 <=> a ∈ (-oo;241/4]