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Integrate the functions: etan-1x1+x2

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Question

Integrate the functions:

`e^(tan^(-1)x)/(1+x^2)`

Sum
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Solution

Let `I = int (e^(tan -1 x)/(1 + x^2))` dx

Put tan-1 x = t 

`1/(1 + x^2)` dx = dt

Hence, `I = int e^t` dt

= et + C

= `e^(tan^-1) + C`

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Chapter 7: Integrals - Exercise 7.2 [Page 305]

APPEARS IN

NCERT Mathematics Part 1 and 2 [English] Class 12
Chapter 7 Integrals
Exercise 7.2 | Q 18 | Page 305

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