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Sample Paper 2018-19
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Q6 of 29 Page 1

If find k such that A2 = 5A+kI.

Given,







A2 – 5A = KI




⇒ k = –7


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4

Find the acute angle which the line with direction cosinesn makes with the positive direction ofz-axis.

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Let A = Z × Z and * be a binary operation on A defined by (a, b)*(c, d) = (ad + bc, bd).

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Find:

8

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Questions · 29
Sample Paper 2018-19
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