class 12 maths integrals

$\int {\sec x\left( {\sec x + \tan x} \right)dx}$

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📘 Integrals NCERT,ex.7.1,Q.18,Page 299 SA

$\int {\sec x\left( {\sec x + \tan x} \right)dx}$

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: Let $I = \int {\sec x\left( {\sec x + \tan x} \right)dx} = \int {\left( {{{\sec }^2}x + \sec x\tan x} \right)dx}$
$= \tan x + \sec x + C$

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