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Supplementary examples and questions from CBSE
Supplementary Example 2 Important Deleted for CBSE Board 2023 Exams
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Supplementary Exercise Q1 Deleted for CBSE Board 2023 Exams You are here
Supplementary Exercise Q2 Deleted for CBSE Board 2023 Exams
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Supplementary Exercise Q4 Important Deleted for CBSE Board 2023 Exams
Supplementary Exercise Q5 Deleted for CBSE Board 2023 Exams
Supplementary Exercise Q6 Important Deleted for CBSE Board 2023 Exams
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Supplementary Exercise Q10 Deleted for CBSE Board 2023 Exams
Supplementary examples and questions from CBSE
Last updated at March 16, 2023 by Teachoo
Supplementary Exercise Q1 if đ â = 7đ Ě â 2đ Ě + 3đ Ě, đ â = đ Ě â đ Ě + 2đ Ě and đ â = 3đ Ě + 8đ Ě , then find đ â (đ â Ă đ â) and (đ â Ă đ â). đ â Also Find whether if đ â.(đ â Ă đ â) and (đ â Ă đ â).đ â are equal Given, đ â = 7đ Ě â 2đ Ě + 3đ Ě , đ â = đ Ě â đ Ě + 2đ Ě , đ â = 3đ Ě + 8đ Ě = 3đ Ě + 8đ Ě + 0đ Ě đ â.(đ â Ă đ â) = [đ â" " đ â" " đ â ] = |â 8(7&â2&[email protected]&â1&[email protected]&8&0)| = 7[(â1Ă0)â(8Ă2) ] â (â2) [(1Ă0)â(3Ă2) ] + 3[(1Ă8)â(3Ăâ1)] = 7 [0â16]+2(0â6)+3[8+3] = 7(â16) + 2(â6) + 3(11) = â112 â 12 + 33 = â91 Finding (đ â Ă đ â).đ â = đ â.(đ â Ă đ â) = [đ â" " đ â" " đ â ] = |â 8(3&8&[email protected]&â2&[email protected]&â1&2)| = 3[(â2Ă2)â(â1Ă3) ] â 8[(7Ă2)â(1Ă3) ] + 0[(7Ăâ1)â(1Ăâ2)] = 3[â4+3]â8(14â3)â0 = 3(â1) â 8(11) = â3 â 88 = â91 Hence , đ â.(đ â Ă đ â) = (đ â Ă đ â).đ â