khảo cthuc toán 10
Authored by giabao do
Mathematics
10th Grade
Used 1+ times
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36 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
phương trình (1)vô nghiệm khi ?
Δ<0
Δ>0
Δ=0
Δ>1
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
cách tính delta Δ ?
Δ = b^2 - 4a.c
Δ = b^2 + 4a.c
Δ = b^2 = 4a.c
Δ = b^2 : 4ac
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
cách tính Δ' ?
Δ' = b'^2 - ac
Δ' = b'^2 - 4ac
Δ' = b^2 + 4ac
Δ' = b'^2 - 2ac
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
cách tính b' ?
b' = b / 2
b' = b / 4
b' = b : 2
b' = b + 2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
pt vô nghiệm khi
(Δ) < 0
(Δ) > 0
(Δ) = 0
(Δ) + 0
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
pt có 2 nghiệm phân biệt khi
(Δ) > 0
a ≠ 0
(Δ) < 0
a = 0
(Δ) < 0
a ≠ 0
(Δ) > 0
a = 0
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
pt có 1 nghiệm khi ?
Δ = 0
Δ < 0
Δ > 0
Δ + 0
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