Ordinary Differential Equation -- from Wolfram MathWorld

Spherical Bessel Differential Equation -- from Wolfram MathWorld

Logistic Differential Equation

Second-Order Ordinary Differential Equation -- from Wolfram MathWorld

Ordinary Differential Equation -- from Wolfram MathWorld

Second-Order Ordinary Differential Equation -- from Wolfram MathWorld

Second-Order Ordinary Differential Equation -- from Wolfram MathWorld

Riccati Differential Equation -- from Wolfram MathWorld

Taylor series - from wolfram math world

Numerical integration - Wikipedia

Ordinary Differential Equation -- from Wolfram MathWorld