Separable differential equations

Grade 12 Math Worksheet

NameDate

Circle the best answer, or write your answer on the line.

  1. dy/dx = 2xy² with y(0) = 2. Bo separates and solves. What is y(0.5)?

  2. dy/dx = 2xy² with y(0) = 1. Esme separates and solves. What is y(0.25)?

  3. Cocoa cools by dT/dt = −0.1(T − 20) °C per minute, with T(0) = 90 (example data). Kira separates and solves. What is T(10), to the nearest hundredth?

  4. Cocoa cools by dT/dt = −0.05(T − 25) °C per minute, with T(0) = 85 (example data). Luz separates and solves. What is T(20), to the nearest hundredth?

  5. Cocoa cools by dT/dt = −0.2(T − 15) °C per minute, with T(0) = 75 (example data). Milo separates and solves. What is T(5), to the nearest hundredth?

  6. Cocoa cools by dT/dt = −0.1(T − 22) °C per minute, with T(0) = 100 (example data). Noah separates and solves. What is T(5), to the nearest hundredth?

  7. Pia separates and integrates dy/dx = y cos x. Which is the general solution (C any constant)?

    • y = C sin x
    • y = Ce^(−sin x)
    • y = e^(sin x) + C
    • y = Ce^(sin x)
  8. Ren separates and integrates dy/dx = 3x²y. Which is the general solution (C any constant)?

    • y = Ce^(−x³)
    • y = Cx³
    • y = Ce^(x³)
    • y = e^(x³) + C
  9. Tala separates and integrates dy/dx = y/x, for x > 0. Which is the general solution (C any constant)?

    • y = C ln x
    • y = C/x
    • y = Cx
    • y = x + C
  10. Zee separates and integrates dy/dx = −2xy. Which is the general solution (C any constant)?

    • y = Ce^(−x²)
    • y = Ce^(x²)
    • y = −Cx²
    • y = e^(−x²) + C
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Separable differential equations

Answer Key - Grade 12 Math Worksheet

Circle the best answer, or write your answer on the line.

  1. dy/dx = 2xy² with y(0) = 2. Bo separates and solves. What is y(0.5)?

    4
  2. dy/dx = 2xy² with y(0) = 1. Esme separates and solves. What is y(0.25)?

    16/15
  3. Cocoa cools by dT/dt = −0.1(T − 20) °C per minute, with T(0) = 90 (example data). Kira separates and solves. What is T(10), to the nearest hundredth?

    45.75
  4. Cocoa cools by dT/dt = −0.05(T − 25) °C per minute, with T(0) = 85 (example data). Luz separates and solves. What is T(20), to the nearest hundredth?

    47.07
  5. Cocoa cools by dT/dt = −0.2(T − 15) °C per minute, with T(0) = 75 (example data). Milo separates and solves. What is T(5), to the nearest hundredth?

    37.07
  6. Cocoa cools by dT/dt = −0.1(T − 22) °C per minute, with T(0) = 100 (example data). Noah separates and solves. What is T(5), to the nearest hundredth?

    69.31
  7. Pia separates and integrates dy/dx = y cos x. Which is the general solution (C any constant)?

    • y = C sin x
    • y = Ce^(−sin x)
    • y = e^(sin x) + C
    • y = Ce^(sin x)
  8. Ren separates and integrates dy/dx = 3x²y. Which is the general solution (C any constant)?

    • y = Ce^(−x³)
    • y = Cx³
    • y = Ce^(x³)
    • y = e^(x³) + C
  9. Tala separates and integrates dy/dx = y/x, for x > 0. Which is the general solution (C any constant)?

    • y = C ln x
    • y = C/x
    • y = Cx
    • y = x + C
  10. Zee separates and integrates dy/dx = −2xy. Which is the general solution (C any constant)?

    • y = Ce^(−x²)
    • y = Ce^(x²)
    • y = −Cx²
    • y = e^(−x²) + C