1
WB JEE 2018
MCQ (Single Correct Answer)
+1
-0.25
If the following three linear equations have a non-trivial solution, then
x + 4ay + az = 0
x + 3by + bz = 0
x + 2cy + cz = 0
x + 4ay + az = 0
x + 3by + bz = 0
x + 2cy + cz = 0
2
WB JEE 2018
MCQ (Single Correct Answer)
+2
-0.5
The least positive integer n such that $${\left( {\matrix{
{\cos \pi /4} & {\sin \pi /4} \cr
{ - \sin {\pi \over 4}} & {\cos {\pi \over 4}} \cr
} } \right)^n}$$ is an identity matrix of order 2 is
3
WB JEE 2017
MCQ (Single Correct Answer)
+1
-0.25
The linear system of equations
$$\left. \matrix{ 8x - 3y - 5z = 0 \hfill \cr 5x - 8y + 3z = 0 \hfill \cr 3x + 5y - 8z = 0 \hfill \cr} \right\}$$ has
$$\left. \matrix{ 8x - 3y - 5z = 0 \hfill \cr 5x - 8y + 3z = 0 \hfill \cr 3x + 5y - 8z = 0 \hfill \cr} \right\}$$ has
4
WB JEE 2017
MCQ (Single Correct Answer)
+1
-0.25
Let P be the set of all non-singular matrices of order 3 over R and Q be the set of all orthogonal matrices of order 3 over R. Then,
Questions Asked from Matrices and Determinants (MCQ (Single Correct Answer))
Number in Brackets after Paper Indicates No. of Questions
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