Book: Mathematics Part-II
Chapter: 7. Integrals
Subject: Maths - Class 12th
Q. No. 20 of Exercise 7.9
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20
Evaluate 
Let I = 
⇒ I = 
I = I1 + I2
I1 = 
⇒ I1 = 
[
]
⇒ I1 = 
⇒ I1 = e – e – 0 + 1
⇒ I1 = 1
I2 = 
[
]
⇒ I2 = 
⇒ I2 = 
= 
Since, I = I1 + I2
∴ I = 1 + 
∴ 
= 1 + 
21
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