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11B-lucrarea determinanti

Authored by Mihaela Gabor

Mathematics

11th Grade

Used 2+ times

11B-lucrarea determinanti
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10 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

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110\frac{1}{10}

512\frac{5}{12}

112-\frac{1}{12}

15\frac{1}{5}

2.

MULTIPLE SELECT QUESTION

2 mins • 1 pt

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Rezolvați ecuația în numere reale.

nu are soluții reale

y=3y=3

y=3y=-3

y=9y=9

y=9y=-9

3.

FILL IN THE BLANK QUESTION

1 min • 1 pt

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Calculați determinantul

(a)  

4.

MULTIPLE SELECT QUESTION

2 mins • 1 pt

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Rezolvați ecuația în numere reale.

x=0x=0

x=1x=1

x=2x=2

x=1x=-1

x=2x=-2

5.

FILL IN THE BLANK QUESTION

2 mins • 1 pt

Dacă matricea  AMn(R), detA=3, A\in M_n\left(R\right),\ \det A=3,\    det(3A)=81\det\left(3A\right)=81  calculați  det(5A)\det\left(5A\right)  

(a)  

6.

MULTIPLE SELECT QUESTION

2 mins • 1 pt

Determinați numărul real  aa  pentru care punctele  A(2,a), B(3,1), C(a1,3)A\left(2,a\right),\ B\left(3,1\right),\ C\left(a-1,-3\right)  sunt coliniare.

 a=0a=0  

 a=5a=5  

 a=5a=-5  

 a=1a=1  

 a=1a=-1  

7.

FILL IN THE BLANK QUESTION

2 mins • 1 pt

Determinați aria triunghiului cu vârfurile în punctele  M\left(-1,2\right),\ N\left(1,4\right),\ P\left(2,0\right).  

(a)  

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