## MATHEMATICS MATRIX QUIZ-10

As per analysis for previous years, it has been observed that students preparing for JEE MAINS find Mathematics out of all the sections to be complex to handle and the majority of them are not able to comprehend the reason behind it. This problem arises especially because these aspirants appearing for the examination are more inclined to have a keen interest in Mathematics due to their ENGINEERING background.

Furthermore, sections such as Mathematics are dominantly based on theories, laws, numerical in comparison to a section of Engineering which is more of fact-based, Physics, and includes substantial explanations. By using the table given below, you easily and directly access to the topics and respective links of MCQs. Moreover, to make learning smooth and efficient, all the questions come with their supportive solutions to make utilization of time even more productive. Students will be covered for all their studies as the topics are available from basics to even the most advanced.

Q1.

•  F(-Î±)
•  F(Î±-1
•  F(2Î±)
•  None of these
Solution

Q2.If D=diag (d1,d2,d3,…,dn ), where di≠0 for all i=1,2,…,n, then D-1 is equal to
•  D
•  diag (d1-1 d2-1,…,dn-1
•  In
•  None of these
Solution

Q3.  Which of the following is correct?
•  Determinant is square matrix
•  Determinant is a number associated to a matrix
•  Determinant is a number associated to a square matrix
•  None of these
Solution
No solution available

Q4. If A is a square matrix such that AAT=I=AT A, then A is
•  A symmetric matrix
•  A skew-symmetric matrix
•  A diagonal matrix
•  An orthogonal matrix
Solution
No solution available

Q5.

•  1
•  2
•  3
•  4
Solution

Q6. If x2+y2+z2≠0,x=cy+bz,y=az+cx and z=bx+ay, then a2+b2+c2+2abc=
•  1
•  a+b+c
•  1
•  ab+bc+ca
Solution

Q7.If I3 is the identity matrix of order 3, then (I3 )-1= 2x+y-z=7,x-3y+2z=1,x+4y-3z=5 is
• 0
•  3I3
•  I3
•  Not necessarily exists
Solution
No solution available

Q8.If A=[aij] is a scalar matrix of order n×n such that aii=k for all i, then |A|=
• nk
•  n+k
•  nk
•  kn
Solution

Q9.

•  A(2Î±)
•  A(Î±)
•  A(3Î±)
•  A(4Î±)
Solution

Q10.

•  -1
•  C0
•  2
•  0
Solution

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