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यदि A=[0ab-a0c-b-c0] तो 12 (A + A’) तथा 12 (A – A’) ज्ञात कीजिए। - Mathematics (गणित)

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Question

यदि `A = [(0, a, b),(-a, 0, c),(-b, -c, 0)]`  तो `1/2` (A + A’) तथा `1/2` (A – A’) ज्ञात कीजिए।

Sum

Solution

दिया गया है `A = [(0, a, b),(-a, 0, c),(-b, -c, 0)]`

इसलिए A' = `[(0, - a, - b),(a, 0, - c),(b, c, 0)] = - [(0, a, b),(-a, 0, c),(-b, -c, 0)]` = - A

अब, `1/2` (A + A') = `1/2  ([(0, a, b),(-a, 0, c),(-b, -c, 0)] - [(0, a, b),(-a, 0, c),(-b, -c, 0)])`

`= [(0,0,0),(0,0,0),(0,0,0)]`

फिर,  `1/2` (A - A') = `1/2  ([(0, a, b),(-a, 0, c),(-b, -c, 0)] + [(0, a, b),(-a, 0,c),(-b, -c, 0)])`

`= 1/2 [(0, 2a, 2b),(- 2a, 0, 2c),(- 2b, - 2c, 0)]`

`= [(0, a, b),(-a, 0, c),(-b, -c, 0)]`

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आव्यूह का परिवर्त
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Chapter 3: आव्यूह - प्रश्नावली 3.3 [Page 97]

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NCERT Mathematics - Part 1 and 2 [Hindi] Class 12
Chapter 3 आव्यूह
प्रश्नावली 3.3 | Q 9. | Page 97
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