Ex 7.3, 18 - Integrate cos 2x + 2 sin2 x / cos2 x dx - Integration using trigo identities - 2x formulae

  1. Class 12
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Ex 7.3, 18 (cos⁑2π‘₯ + 2 sin^2⁑π‘₯)/cos^2⁑π‘₯ 𝑑π‘₯ ∫1β–’(cos⁑2π‘₯ + 2 sin^2⁑π‘₯)/cos^2⁑π‘₯ 𝑑π‘₯ =∫1β–’(1 βˆ’ 2 sin^2⁑π‘₯ + 2 sin^2⁑π‘₯)/cos^2⁑π‘₯ 𝑑π‘₯ =∫1β–’1/cos^2⁑π‘₯ 𝑑π‘₯ =∫1β–’sec^2⁑π‘₯ 𝑑π‘₯ =π­πšπ§β‘π’™+π‘ͺ

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