Ex 7.3, 8 - Chapter 7 Class 12 Integrals
Last updated at July 11, 2018 by Teachoo
Transcript
Ex 7.3, 8 1 − 𝑐𝑜𝑠 𝑥1 + 𝑐𝑜𝑠 𝑥 1 − cos𝑥1 + cos𝑥 We know that Thus, our equation becomes 1 − cos𝑥1 + cos𝑥 𝑑𝑥= 2 sin2 𝑥22 cos2 𝑥2 = sin2 𝑥2 cos2 𝑥2 𝑑𝑥 = tan2 𝑥2 𝑑𝑥 = sec2 𝑥2 −1𝑑𝑥 = sec2 𝑥2𝑑𝑥− 𝑑𝑥 = tan2 𝑥2 12 −𝑥+𝐶 =𝟐 𝐭𝐚𝐧 𝒙𝟐 −𝒙+𝑪
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