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Ex 9.1, 1 Determine order and degree (if defined) of differential equations. (𝑑^4 𝑦)/(𝑑π‘₯^4 ) +𝑠𝑖𝑛(𝑦^β€²β€²β€² )=0 (𝑑^4 𝑦)/(𝑑π‘₯^4 )+𝑠𝑖𝑛(𝑦^β€²β€²β€² )=0 π’š^β€²β€²β€²β€²+π’”π’Šπ’(π’š^β€²β€²β€² )=𝟎 Highest Order of Derivative = 4 ∴ Order = πŸ’ Degree Since 𝑦^β€²β€²β€² is in sin⁑〖 (𝑦^β€²β€²β€² )γ€— It is not a polynomial equation ∴ Degree is Not Defined

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Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths and Science at Teachoo.