Ex 10.2, 6 - Ex 10.2

  1. Chapter 10 Class 12 Vector Algebra (Term 2)
  2. Serial order wise

Transcript

Ex 10.2, 6 Find the sum of the vectors ๐‘Ž โƒ— = ๐‘– ฬ‚ โˆ’ 2๐‘— ฬ‚ + ๐‘˜ ฬ‚, ๐‘ โƒ— = โˆ’2๐‘– ฬ‚ + 4๐‘— ฬ‚ + 5๐‘˜ and ๐‘ โƒ— = ๐‘– ฬ‚ โ€“ 6๐‘— ฬ‚ โˆ’ 7๐‘˜ ฬ‚. ๐‘Ž โƒ— = ๐‘– ฬ‚ โˆ’ 2๐‘— ฬ‚ + ๐‘˜ ฬ‚, ๐‘ โƒ— = โˆ’2๐‘– ฬ‚ + 4๐‘— ฬ‚ + 5๐‘˜ ๐‘ โƒ— = ๐‘– ฬ‚ โ€“ 6๐‘— ฬ‚ โˆ’ 7๐‘˜ ฬ‚. Now, (๐‘Ž โƒ— + ๐‘ โƒ— + ๐‘ โƒ—) = (1 โ€“ 2 + 1) ๐‘– ฬ‚ + (-2 + 4 โ€“ 6) ๐‘— ฬ‚ + (1 + 5 โ€“ 7) ๐‘˜ ฬ‚ = 0๐‘– ฬ‚ โ€“ 4๐‘— ฬ‚ โ€“ ๐‘˜ ฬ‚ = โ€“ 4๐‘— ฬ‚ โ€“ ๐‘˜ ฬ‚ โˆด Sum of vectors ๐‘Ž โƒ— , ๐‘ โƒ— and ๐‘ โƒ— = โ€“ 4๐’‹ ฬ‚ โ€“ ๐’Œ ฬ‚

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.