GATE ME 2006 | Linear Algebra Question 38 | Engineering Mathematics

Multiplication of matrices $$E$$ and $$F$$ is $$G.$$ Matrices $$E$$ and $$G$$ are
$$E = \left[ {\matrix{ {\cos \theta } & { - sin\theta } & 0 \cr {sin\theta } & {\cos \theta } & 0 \cr 0 & 0 & 1 \cr } } \right]$$ and $$G = \left[ {\matrix{ 1 & 0 & 0 \cr 0 & 1 & 0 \cr 0 & 0 & 1 \cr } } \right]$$
What is the matrix $$F?$$

$$\left[ {\matrix{ {\cos \theta } & { - sin\theta } & 0 \cr {sin\theta } & {\cos \theta } & 0 \cr 0 & 0 & 1 \cr } } \right]$$

$$\left[ {\matrix{ {\cos \theta } & {\cos \theta } & 0 \cr { - \cos \theta } & {sin\theta } & 0 \cr 0 & 0 & 1 \cr } } \right]\,$$

$$\left[ {\matrix{ {\cos \theta } & { - sin\theta } & 0 \cr { - sin\theta } & {\cos \theta } & 0 \cr 0 & 0 & 1 \cr } } \right]\,$$

$$\left[ {\matrix{ {sin\theta } & { - \cos \theta } & 0 \cr {\cos \theta } & {sin\theta } & 0 \cr 0 & 0 & 1 \cr } } \right]$$

GATE ME 2005

MCQ (Single Correct Answer)

-0.6

Which one of the following is an eigen vector of the matrix $$\left[ {\matrix{ 5 & 0 & 0 & 0 \cr 0 & 5 & 0 & 0 \cr 0 & 0 & 2 & 1 \cr 0 & 0 & 3 & 1 \cr } } \right]$$ is

$${\left[ {\matrix{ 1 & { - 2} & 0 & 0 \cr } } \right]^T}$$

$${\left[ {\matrix{ 0 & { 0} & 1 & 0 \cr } } \right]^T}$$

$${\left[ {\matrix{ 1 & { 0} & 0 & -2 \cr } } \right]^T}$$

$${\left[ {\matrix{ 1 & { - 1} & 2 & 1 \cr } } \right]^T}$$

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