Ex 7.10, 14 - Chapter 7 Class 12 Integrals

Last updated at August 18, 2026 by

  Ex 7.10, 14 - Using properties, evaluate integral cos5 x dx - Ex 7.10

part 2 - Ex 7.10, 14 - Ex 7.10 - Serial order wise - Chapter 7 Class 12 Integrals

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Ex 7.10, 14 By using the properties of definite integrals, evaluate the integrals : ∫_0^2𝜋▒cos^5⁡𝑥 𝑑𝑥 ∫_0^2𝜋▒cos^5⁡𝑥 𝑑𝑥 =∫_0^𝜋▒cos^5⁡𝑥 𝑑𝑥+∫_0^𝜋▒〖cos^5 (2π−𝑥)〗 𝑑𝑥 = ∫_0^𝜋▒〖〖𝑐𝑜𝑠〗^5 𝑥 𝑑𝑥+∫_0^𝜋▒〖𝑐𝑜𝑠〗^5 〗 𝑥 = 2 ∫_0^𝜋▒〖〖𝑐𝑜𝑠〗^5 𝑥 𝑑𝑥〗 = 2 (∫_0^(𝜋/2)▒〖〖𝑐𝑜𝑠〗^5 𝑥 𝑑𝑥+∫_0^(𝜋/2)▒〖cos⁡(𝜋−𝑥) 〗〗 𝑑𝑥) = 2 (∫_0^(𝜋/2)▒〖〖𝑐𝑜𝑠〗^5 𝑥 𝑑𝑥+∫_0^(𝜋/2)▒〖(− cos 𝑥)^5⁡𝑑𝑥 〗〗) = 2 (∫_0^(𝜋/2)▒〖〖𝑐𝑜𝑠〗^5 𝑥 𝑑𝑥−∫_0^(𝜋/2)▒〖〖〖𝑐𝑜𝑠〗^5 𝑥〗⁡𝑑𝑥 〗〗) = 2×0 = 0

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