Ex 9.3, 23 (MCQ) - Chapter 9 Class 12 Differential Equations
Last updated at April 16, 2024 by Teachoo
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Ex 9.3
Ex 9.3, 1
Important
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Ex 9.4 →
Chapter 9 Class 12 Differential Equations
Serial order wise
- Ex 9.1
- Ex 9.2
-
Ex 9.3
- Ex 9.4
- Ex 9.5
- Examples
- Miscellaneous
- Case Based Questions (MCQ)
- Forming Differential equations
Transcript
Ex 9.3, 23 The general solution of the differential equation 𝑑𝑦/𝑑𝑥=𝑒^(𝑥+𝑦) is (A) 𝑒^𝑥+𝑒^(−𝑦)=𝐶 (B) 𝑒^𝑥+𝑒^𝑦=𝐶 (C) 𝑒^(−𝑥)+𝑒^𝑦=𝐶 (D) 𝑒^(−𝑥)+𝑒^(−𝑦)=𝐶 𝑑𝑦/𝑑𝑥 = 𝑒^(𝑥 + 𝑦) 𝑑𝑦/𝑑𝑥 = 𝑒^(𝑥 ) 𝑒^( 𝑦) 𝒅𝒚/𝒆^𝒚 = 𝒆^(𝒙 ) 𝒅𝒙 Integrating both sides ∫1▒𝑒^(−𝑦) 𝑑𝑦= ∫1▒𝑒^𝑥 𝑑𝑥 〖−𝒆〗^(−𝒚) = 𝒆^𝒙+𝒄 𝑒^𝑥 + 𝑒^(−𝑦) = C So, the correct answer is (a)
