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Ex 7.3, 13 Integrate the function cosโกใ€–2๐‘ฅ โˆ’ cosโก2๐›ผ ใ€—/cosโกใ€–๐‘ฅ โˆ’ cosโก๐›ผ ใ€— โˆซ1โ–’ใ€–cosโกใ€–2๐‘ฅ โˆ’ cosโก2๐›ผ ใ€—/cosโกใ€–๐‘ฅ โˆ’ cosโก๐›ผ ใ€— " " ๐‘‘๐‘ฅใ€— =โˆซ1โ–’((2 cos^2โกใ€–๐‘ฅ โˆ’ 1ใ€— ) โˆ’ (2 cos^2โกใ€–๐›ผ โˆ’ 1ใ€— ))/(cosโก๐‘ฅ โˆ’ cosโก๐›ผ ) ๐‘‘๐‘ฅ =โˆซ1โ–’(2 cos^2โกใ€–๐‘ฅ โˆ’ 1ใ€— โˆ’ 2 cos^2โกใ€–๐›ผ + 1ใ€—)/(cosโก๐‘ฅ โˆ’ cosโก๐›ผ ) ๐‘‘๐‘ฅ =โˆซ1โ–’(2 cos^2โก๐‘ฅ โˆ’ 2 cos^2โก๐›ผ + 1 โˆ’ 1)/(cosโก๐‘ฅ โˆ’ cosโก๐›ผ ) ๐‘‘๐‘ฅ =โˆซ1โ–’2(cos^2โก๐‘ฅ โˆ’ cos^2โก๐›ผ )/(cosโก๐‘ฅ โˆ’ cosโก๐›ผ ) ๐‘‘๐‘ฅ =2โˆซ1โ–’(cos^2โก๐‘ฅ โˆ’ cos^2โก๐›ผ)/(cosโก๐‘ฅ โˆ’ cosโก๐›ผ ) ๐‘‘๐‘ฅ =2โˆซ1โ–’((๐‘๐‘œ๐‘ โก๐‘ฅ โˆ’ ๐‘๐‘œ๐‘ โก๐›ผ ) (๐‘๐‘œ๐‘ โก๐‘ฅ + ๐‘๐‘œ๐‘ โก๐›ผ ))/((๐‘๐‘œ๐‘ โก๐‘ฅ โˆ’ ๐‘๐‘œ๐‘ โก๐›ผ ) ) ๐‘‘๐‘ฅ =2โˆซ1โ–’(๐‘๐‘œ๐‘ โก๐‘ฅ+๐‘๐‘œ๐‘ โก๐›ผ ) ๐‘‘๐‘ฅ =2(โˆซ1โ–’๐‘๐‘œ๐‘ โก๐‘ฅ ๐‘‘๐‘ฅ+โˆซ1โ–’๐‘๐‘œ๐‘ โก๐›ผ ๐‘‘๐‘ฅ) =2(โˆซ1โ–’๐‘๐‘œ๐‘ โก๐‘ฅ ๐‘‘๐‘ฅ+๐‘๐‘œ๐‘ โก๐›ผ โˆซ1โ–’1. ๐‘‘๐‘ฅ) =๐Ÿ(๐’”๐’Š๐’โก๐’™+๐’™โก๐’„๐’๐’” ๐œถ)" +" ๐‘ช (๐‘๐‘œ๐‘ โก2๐œƒ=2 ใ€–๐‘๐‘œ๐‘ ใ€—^2โก๐œƒโˆ’1)

  1. Chapter 7 Class 12 Integrals
  2. Serial order wise

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo