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  • NDA Exam Mathematics Study Material

Digitization help student to explore and study their academic courses online, as this gives them flexibility and scheduling their learning at their convenience. Kidsfront has prepared unique course material of Mathematics Matrices and Determinants for NDA Exam student. This free online Mathematics study material for NDA Exam will help students in learning and doing practice on Matrices and Determinants topic of NDA Exam Mathematics. The study material on Matrices and Determinants, help NDA Exam Mathematics students to learn every aspect of Matrices and Determinants and prepare themselves for exams by doing online test exercise for Matrices and Determinants, as their study progresses in class. Kidsfront provide unique pattern of learning Mathematics with free online comprehensive study material and loads of NDA Exam Mathematics Matrices and Determinants exercise prepared by the highly professionals team. Students can understand Matrices and Determinants concept easily and consolidate their learning by doing practice test on Matrices and Determinants regularly till they excel in Mathematics Matrices and Determinants.


Matrices and 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 :