GATE ME 2015 Set 3 | Linear Algebra Question 19 | Engineering Mathematics

For a given matrix $$P = \left[ {\matrix{ {4 + 3i} & { - i} \cr i & {4 - 3i} \cr } } \right],$$ where $$i = \sqrt { - 1} ,$$ the inverse of matrix $$P$$ is

$${1 \over {24}}\left[ {\matrix{ {4 - 3i} & i \cr { - i} & {4 + 3i} \cr } } \right]$$

$${1 \over {25}}\left[ {\matrix{ i & {4 - 3i} \cr {4 + 3i} & i \cr } } \right]$$

$${1 \over {24}}\left[ {\matrix{ {4 + 3i} & { - i} \cr i & {4 - 3i} \cr } } \right]$$

$${1 \over {25}}\left[ {\matrix{ {4 + 3i} & { - i} \cr i & {4 - 3i} \cr } } \right]$$

GATE ME 2013

MCQ (Single Correct Answer)

-0.6

Choose the CORRECT set of functions, which are linearly dependent.

$$\sin x,\,{\sin ^2}x$$ and $${\cos ^2}x$$

$$\cos x,\sin x$$ and $$\tan x$$

$$\cos \,2x,{\sin ^2}x$$ and $${\cos ^2}x$$

$$\cos \,2x,\sin x$$ and $$\cos x$$

GATE ME 2012

MCQ (Single Correct Answer)

-0.6

$$x+2y+z=4, 2x+y+2z=5, x-y+z=1$$
The system of algebraic equations given above has

a unique solution of $$x=1,y=1$$ and $$z=1$$

only the two solutions of $$x=1, y=1, z=1$$ and $$x=2, y=1, z=0$$

infinite number of solutions.

no feasible solution.

GATE ME 2008

MCQ (Single Correct Answer)

-0.6

The eigen vectors of the matrix $$\left[ {\matrix{ 1 & 2 \cr 0 & 2 \cr } } \right]$$ are written in the form $$\left[ {\matrix{ 1 \cr a \cr } } \right]\,\,\& \,\,\left[ {\matrix{ 1 \cr b \cr } } \right].$$ What is $$a+b$$?

$$0$$

$${1 \over 2}$$

$$1$$

$$2$$

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Engineering Mechanics

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Heat Transfer

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