Mathematics, 24.06.2021 07:40 AllyArce

Giá trị a, b để hệ phương trình ⎧⎩⎨x+2y+az=33x−y−az=22x+y+3z=bcó nghiệm duy nhất là Select one:

a.∀a, b∈R

b. a≠212v a` ∀b∈R

c. Không tồn tại a, b∈R

d. a=212v a` ∀b∈R

Answers: 1

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Giá trị a, b để hệ phương trình ⎧⎩⎨x+2y+az=33x−y−az=22x+y+3z=bcó nghiệm duy nhất là Select one:

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