1
GATE CSE 2015 Set 1
Numerical
+1
-0
In the LU decomposition of the matrix $$\left[ {\matrix{ 2 & 2 \cr 4 & 9 \cr } } \right]$$, if the diagonal elements of U are both 1, then the lower diagonal entry $${l_{22}}$$ of L is ________.
Your input ____
2
GATE CSE 2015 Set 2
Numerical
+1
-0
The larger of the two eigenvalues of the matrix $$\left[ {\matrix{ 4 & 5 \cr 2 & 1 \cr } } \right]$$ is ______.
Your input ____
3
GATE CSE 2015 Set 2
Numerical
+1
-0
The number of divisors of $$2100$$ is ___________.
Your input ____
4
GATE CSE 2015 Set 3
MCQ (Single Correct Answer)
+1
-0.3
In the given matrix $$\left[ {\matrix{ 1 & { - 1} & 2 \cr 0 & 1 & 0 \cr 1 & 2 & 1 \cr } } \right],$$ one of the eigenvalues is $$1.$$ The eigen vectors corresponding to the eigen value $$1$$ are
A
$$\left\{ {\alpha \left( {4,2,1} \right)\left| {\alpha \ne 0,\alpha \in \left. R \right\}} \right.} \right.$$
B
$$\left\{ {\alpha \left( { - 4,2,1} \right)\left| {\alpha \ne 0,\alpha \in \left. R \right\}} \right.} \right.$$
C
$$\left\{ {\alpha \left( {\sqrt 2 ,0,1} \right)\left| {\alpha \ne 0,\alpha \in \left. R \right\}} \right.} \right.$$
D
$$\left\{ {\alpha \left( { - \sqrt 2 ,0,1} \right)\left| {\alpha \ne 0,\alpha \in \left. R \right\}} \right.} \right.$$
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