Applying the method of separation of variables to solve differential equations:

    Cards (43)

    • Differential equations describe relationships between a function and its rate of change
    • Steps in the method of separation of variables
      1️⃣ Separate variables
      2️⃣ Integrate both sides
      3️⃣ Solve for y
    • The general solution to a differential equation includes arbitrary constants.

      True
    • In separation of variables, terms involving y and dy are moved to one side of the equation.
      True
    • Separable differential equations can be written in the form dy/dx = f(x)g(y).

      True
    • In a separable differential equation, g(y)g(y) contains only the variable yy.

      True
    • Steps to solve a separable differential equation
      1️⃣ Separate the variables
      2️⃣ Integrate both sides
      3️⃣ Solve for yy
    • Match the type of solution with its definition:
      General Solution ↔️ Includes arbitrary constants
      Particular Solution ↔️ Obtained from initial conditions
    • Steps to identify a separable differential equation
      1️⃣ Check if it can be written as \frac{dy}{dx} = f(x)g(y)</latex>
      2️⃣ Verify that f(x)f(x) depends only on xx
      3️⃣ Verify that g(y)g(y) depends only on yy
    • A separable differential equation can be rewritten in the form \frac{dy}{dx}
    • An example of a separable differential equation is \frac{dy}{dx} = xy
    • What is the next step after separating the variables in a separable differential equation?
      Integrate both sides
    • What does the arbitrary constant C in the general solution represent?
      A family of functions
    • The particular solution is found by applying initial conditions to the general solution.

      True
    • How do you verify that y=y =2ex22 2e^{\frac{x^{2}}{2}} is a solution to dydx=\frac{dy}{dx} =xy xy?

      Substitute and simplify
    • A particular solution to a differential equation includes arbitrary constants.
      False
    • A particular solution is derived from the general solution by applying initial conditions.
      True
    • Match the solution type with its example:
      General Solution ↔️ y = x^2/2 + Cx
      Particular Solution ↔️ y = x^2/2 + 2x (given y(0) = 0)
    • The general solution contains specific constant values derived from initial conditions.
      False
    • Match the characteristic with the type of differential equation:
      Separable ↔️ Variables can be isolated
      Non-Separable ↔️ Variables cannot be isolated
    • To separate variables, move yy terms to one side and xx terms to the other, then multiply or divide to isolate dy and dxdx.
    • After integrating dyy=\int \frac{dy}{y} =xdx \int x \, dx, the result is lny=\ln|y| =x22+ \frac{x^{2}}{2} +C C, where CC is an arbitrary constant.
    • The method of separation of variables involves separating variables so that all yy terms are on one side and xx terms are on the other.
    • An example of a non-separable differential equation is dydx=\frac{dy}{dx} =xy+ xy +y2 y^{2}, as the variables cannot be isolated.
    • In a separable differential equation, f(x) contains only the independent variable x.

      True
    • Steps to separate the variables in a separable differential equation:
      1️⃣ Move the y-terms to one side
      2️⃣ Move the x-terms to the other side
      3️⃣ Isolate dy and dx
    • The general solution for dyy=\int \frac{dy}{y} =xdx \int x \, dx is \ln|y| = \frac{x^{2}}{2} + C</latex>.

      True
    • Steps to solve for the dependent variable y in a general solution:
      1️⃣ Simplify the expression
      2️⃣ Solve for y by exponentiating
    • If the initial condition is y(0) = 2 and the general solution is y=y =Cex22 Ce^{\frac{x^{2}}{2}}, the particular solution is y = 2e^{\frac{x^{2}}{2}}
    • The separation of variables technique simplifies integration by isolating variables on opposite sides of the equation
    • Differential equations describe the relationship between a function and its rate of change
    • The separation of variables technique is used to solve certain types of differential equations by isolating variables on opposite sides of the equation
    • A separable differential equation is one where variables can be separated into two sides of the equation
    • A separable differential equation can be rewritten in the form dydx=\frac{dy}{dx} =f(x)g(y) f(x)g(y), where f(x)f(x) contains only the variable x
    • The separated variables in the equation dydx=\frac{dy}{dx} =xy xy are dyy=\frac{dy}{y} =xdx x \, dx.

      True
    • The general solution of the differential equation dydx=\frac{dy}{dx} =xy xy is y=y =Cex22 Ce^{\frac{x^{2}}{2}}.

      True
    • The integration step in separation of variables results in the general solution.
      True
    • What are separable differential equations characterized by?
      Variables can be separated
    • What is a key difference between separable and non-separable differential equations?
      Variables can be isolated
    • To separate the variables in dydx=\frac{dy}{dx} =xy xy, we rewrite it as \frac{dy}{y} = x \, dx