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Matrices and Determinants - Set 2
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NUST Entrance Test
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Mathematics
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Matrices and Determinants
Set 2
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Mashaal Masha
Sep 28, 2022
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Choose the correct options for the following questions.
Determinant of $\begin{bmatrix}rcos\theta& 1&-sin\theta\\0&1 & 0\\rsin\theta&0&cos\theta \end{bmatrix}$=
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Difficulty: Easy
A:
0
B:
1
C:
-1
D:
r
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Determinant of $\begin{bmatrix}1& 1&1\\1&1+x & 1\\1&1&1+y\end{bmatrix}$=
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Difficulty: Easy
A:
0
B:
1
C:
(1+x)(1+y)
D:
2xy
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