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  • Class 12 Maths Study Material

An Educational platform for Preparation and Practice Class 12. Kidsfront provide unique pattern of learning Maths with free online comprehensive study material in the form of QUESTION & ANSWER for each Chapter of Maths for Class 12. This study material help Class 12, Maths students in learning every aspect of Determinants. Students can understand Determinants concept easily and consolidate their learning by doing Online Practice Tests on Maths,Determinants chapter repeatedly till they excel in Class 12, Determinants. Free ONLINE PRACTICE TESTS on Class 12, Determinants comprise of Hundreds of Questions on Determinants, prepared by the highly professionals team. Every repeat test of Determinants will have new set of questions and help students to prepare themselves for exams by doing unlimited Online Test exercise on Determinants. Attempt ONLINE TEST on Class 12,Maths,Determinants in Academics section after completing this Determinants Question Answer Exercise.


Unique pattern

  • Topic wise:Determinants preparation in the form of QUESTION & ANSWER.
  • Evaluate preparation by doing ONLINE TEST of Class 12, Maths,Determinants.
  • Review performance in PRACTICE TEST and do further learning on weak areas.
  • Attempt repeat ONLINE TESTS of Maths Determinants till you excel.
  • Evaluate your progress by doing ONLINE MOCK TEST of Class 12, Maths, All TOPICS.


Determinants
is equal to?

a) 1 + a2 + b2 + c2
b) 1 - a2 + b2 + c2
c) 1 + a2 + b2 - c2
d) 1 + a2 - b2 + c2



Answer
Correct Answer Is : 1 + a2 + b2 + c2
Solution Is :
If A = , then cofactors of the elements of 2nd row are?

a) (39, -3, 11)
b) (-39, 3, 11)
c) (-39, 27, 11)
d) (-39, -3, 11)



Answer
Correct Answer Is : (-39, 27, 11)
Solution Is :
The value of x, if = 0, is equal to?

a) ±√6
b) ±√2
c) ±√3
d) √2 , √3



Answer
Correct Answer Is : ±√2
Solution Is :
The determinant is equal to zero, if a, b, c are in?

a) G. P.
b) A. P.
c) H. P.
d) None of these



Answer
Correct Answer Is : G. P.
Solution Is :
Value of λ for which the homogeneous system of equations 2x + 3y - 2z = 0, 2x - y + 3z = 0, 7x + λy - z = 0 has non-trivial solutions is?

a) 57/10
b) (-57/10)
c) 81/10
d) 55/10



Answer
Correct Answer Is : 57/10
Solution Is :
If a, b, c are in A.P. , then the value of is?

a) X - (a + b + c)
b) 9x2 + a + b + c
c) A + b + c
d) 0



Answer
Correct Answer Is : 0
Solution Is :
is equal to?

a) (p - q)(q - r)(r - p)
b) Pqr
c) Zero
d) 3pqr



Answer
Correct Answer Is : Zero
Solution Is :
The value of is?

a) 8
b) -8
c) 400
d) 1



Answer
Correct Answer Is : -8
Solution Is :
Let = x + iy, then

a) X = 3, y = 1
b) X = 0, y = 0
c) X = 0, y = 3
d) X = 1, y = 3



Answer
Correct Answer Is : X = 0, y = 0
Solution Is :
If = k, then = ?

a) 6k
b) K/6
c) 2k
d) 3k



Answer
Correct Answer Is : 6k
Solution Is :
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