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Example 35 Find 𝑑2𝑦/𝑑π‘₯2 , if 𝑦 = π‘₯3+tan⁑π‘₯. 𝑦 = π‘₯3+tan⁑π‘₯ Differentiating 𝑀.π‘Ÿ.𝑑.π‘₯ 𝑑𝑦/𝑑π‘₯ = (𝑑(π‘₯^3+ tan⁑〖π‘₯)γ€—)/𝑑π‘₯ 𝑑𝑦/𝑑π‘₯ = (𝑑(π‘₯^3))/𝑑π‘₯ + (𝑑(tan⁑〖π‘₯)γ€—)/𝑑π‘₯ π’…π’š/𝒅𝒙 = πŸ‘π’™πŸ+π’”π’†π’„πŸ 𝒙 Again Differentiating 𝑀.π‘Ÿ.𝑑.π‘₯ (𝑑^2 𝑦)/〖𝑑π‘₯γ€—^2 = (𝑑 (3π‘₯2 +sec^2⁑π‘₯))/𝑑π‘₯ (𝑑^2 𝑦)/〖𝑑π‘₯γ€—^2 = (𝑑 (3π‘₯2))/𝑑π‘₯ + (𝑑 (sec2 π‘₯))/𝑑π‘₯ (𝑑^2 𝑦)/〖𝑑π‘₯γ€—^2 = 6π‘₯+2 sec⁑π‘₯ . (𝑑(sec⁑〖π‘₯)γ€—)/𝑑π‘₯ (𝑑^2 𝑦)/〖𝑑π‘₯γ€—^2 = 6π‘₯+2 sec⁑π‘₯.sec⁑〖π‘₯ tan⁑π‘₯ γ€— γ€–π’…π’šγ€—^𝟐/〖𝒅𝒙〗^𝟐 = πŸ”π’™+𝟐 〖𝒔𝒆𝒄〗^πŸβ‘π’™ . π­πšπ§β‘π’™

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo