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IB Mathematics: Applications and Interpretation HL · AHL 9: Differential Equations · AHL 9.2

Separation of variables: general and particular solutions Problem set B Answers

Skills

    1. (a) \(y=Ae^{-3x}\)
    2. (b) \(y=5+Ae^{0.4x}\)
    3. (c) \(y=9-Ae^{-2x}\)
    1. (a) \(y=-\dfrac{1}{3x^2+A}\)
    2. (b) \(y=Ax^5\)
    3. (c) \(y=\sqrt{\dfrac{14x^3}{3}+A}\)
    1. (a) \(y=\ln(A+\sin x)\)
    2. (b) \(y=Ae^{-e^{-x}}\)
    1. (a) \(y=3e^{5x^2/2}\)
    2. (b) \(y=\sqrt[3]{9x^2-1}\)

Stretch

  1. Shown: \(y=4e^{x^2}-1\)

  2. Shown: \(\tan y=e^{x}+c\)

  3. \(y=\dfrac{x}{x+1}\)

jmaths.xyz · AI HL · AHL 9.2 Separation of variables: general and particular solutions