NCERT Solutions for Class 12 Maths Chapter 7 Integrals — Exercise 7.9

Evaluate the definite integrals in Exercises 1 to 20

Question 1:1 1 ( 1) x dx✁

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Question 2:3 2 1 dx x

Question 3:2 3 2 1 (4 – 5 6 9) x xxd x

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Question 4:4 0 sin 2x dx

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Question 5:2 0 cos 2x dx

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Question 6:5 4 x e dx

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Question 7:4 0 tan x dx

Question 8:4 6 cosec x dx

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Question 9:1 0 2 1 – dx x

Question 10:1 2 0 1 dx x

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Question 11:3 2 2 1 dx x

Question 12:2 2 0 cos x dx

Evaluate the definite integrals in Exercises 1 to

Question 13:3 2 2 1 x dx x

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Question 14:1 2 0 2 3 5 1 x dx x

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Question 15:1 2 0 x x e dx

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Question 16:2 2 2 1 5 4 3 x x x

Question 17:4 2 3 0 (2sec 2) x x dx

CBSE NCERT Solutions For Class 12 Integrals

Question 18:2 2 0 (sin – cos ) 2 2 x x dx ✓ 1

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Question 9:2 2 0 6 3 4 x dx x 20. 1 0 ( sin ) 4 x x x e dx ✔ ✕ Choose the correct answer in Exercises 21 and 22 2

Question 1:3 2 1 1 dx x equals (A) 3 ✔ (B) 2 3 ✔ (C) 6 ✔ (D) 12 ✔ 2

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Question 2:2 3 2 0 4 9 dx ✖ x ✗ equals (A) 6 ✔ (B) 12 ✔ (C) 24 ✔ (D) 4 ✔