# Ex 7.1, 15 - Chapter 7 Class 12 Integrals (Term 2)

Last updated at Sept. 25, 2018 by

Last updated at Sept. 25, 2018 by

Transcript

Ex 7.1, 15 𝑥(3 𝑥2+2𝑥+3)𝑑𝑥 𝑥(3 𝑥2+2𝑥+3)𝑑𝑥 = 𝑥 12 3 𝑥2+2𝑥+3𝑑𝑥 = 3 𝑥 12 . 𝑥2+2 𝑥 12 . 𝑥+3 𝑥 12𝑑𝑥 = 3 𝑥 12 + 2+2 𝑥 12 + 1+3 𝑥 12𝑑𝑥 = 3 𝑥 1 + 42+2 𝑥 1 + 22+3 𝑥 12𝑑𝑥 = 3 𝑥 52+2 𝑥 32+3 𝑥 12𝑑𝑥 =3 𝑥 52𝑑𝑥+2 𝑥 32𝑑𝑥+3 𝑥 12𝑑𝑥 = 3 . 𝑥 52 + 1 52 + 1 + 2 . 𝑥 32 + 1 32 + 1 + 3 𝑥 12 + 1 12 + 1+𝐶 = 3𝑥 72 72 + 2 𝑥 52 52 + 3 𝑥 32 32 +𝐶 =3× 2 𝑥 727 +2× 2 𝑥 52 5 +3× 2 𝑥 323 +𝐶 = 𝟔 𝒙 𝟕𝟐𝟕 + 𝟒 𝒙 𝟓𝟐 𝟓 + 𝟐𝒙 𝟑𝟐+𝑪

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Ex 7.1, 15 You are here

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Ex 7.1, 21 (MCQ)

Ex 7.1, 22 (MCQ) Important

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