12th Math Unit 4 Differential Equations Solved Notes FBISE NBF

Unit 4 Differential Equations Solved Notes Class 12 FBISE New NBF Book 2024-25 PDF | Hamdard Science Academy

Best unit 4 differential equations solved notes class 12 fbise – 100% solved Exercise 4.1 to 4.7 + Full Review Exercise with methods, order/degree tables & FBISE marking scheme from new nbf book differential equations unit 4.

Perfect for FBISE HSSC-II April 2026 Exams – score 90+ marks!

Exercise 4.1 – Order, Degree & Forming DE (All Questions Solved) Exercise 4.1 Page 307-310 Full Solutions ↳ Exercise 4.1 Complete Solved + Order/Degree Table ↳ Q1(i-vii) Order & Degree All Equations ↳ Q1(vi) Radical Removal for Degree 2 Trick ↳ Q2(i-iv) Forming DE from Solutions ↳ Q2(i) y = ae^x + be^{-x} + c → y”’ – y’ = 0 ↳ Q2(ii) y = cos(x+b) → y” + y = 0 ↳ Q2(iii) y = mx + c → y” = 0 ↳ Q2(iv) y = bx^2 + 2ax → y”’ = 0 ↳ Q3(i) Verify y = e^{-x/2} for 2y’ + y = 0

Exercise 4.2 – Separable Variables DE ↳ Exercise 4.2 Full Solutions + Methods ↳ Standard dy/dx = f(x)g(y) Separation

Exercise 4.3 to 4.7 + Review Exercise (100% Solved) ↳ Exercise 4.3 Homogeneous DE Solved ↳ Exercise 4.4 Exact DE & Integrating Factor ↳ Exercise 4.5 Linear DE Bernoulli Form ↳ Exercise 4.6 Orthogonal Trajectories ↳ Exercise 4.7 Applications (Growth/Decay, Mixing) ↳ Review Exercise Unit 4 MCQs + Long Qs Solved

Bonus Resources ↳ Differential Equations Formula Sheet PDF ↳ Top 30 Separable/Homogeneous Shortcuts ↳ DE Short Tricks Video Series ↳ Unit 4 Past Papers Solved (2018-2025) ↳ Unit 3 Integration Solved Notes ↳ Unit 5 Analytical Geometry Coming Soon

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