# Example 33 - Chapter 7 Class 12 Integrals

Last updated at May 29, 2018 by Teachoo

Last updated at May 29, 2018 by Teachoo

Transcript

Example 33 Evaluate −11sin5𝑥cos4𝑥 𝑑𝑥 This is of form −𝑎𝑎𝑓𝑥𝑑𝑥 where 𝑓𝑥=sin5𝑥cos4𝑥 Finding 𝑓−𝑥 𝑓−𝑥=sin5−𝑥 .cos4−𝑥 𝑓−𝑥=−sin𝑥5 .cos4 𝑥 𝑓−𝑥=−15sin5𝑥 .cos4𝑥 𝑓−𝑥=−sin5𝑥 .cos4𝑥 ∴ 𝑓𝑥=−𝑓−𝑥 ∴ −𝟏𝟏𝐬𝐢𝐧𝟓𝒙𝐜𝐨𝐬𝟒𝒙 𝒅𝒙=𝟎

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Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 8 years. He provides courses for Maths and Science at Teachoo. You can check his NCERT Solutions from Class 6 to 12.