In this chapter, we will present the following recipes:

• Integration
• Computing integrals using a Gaussian quadrature
• Computing integrals with weighting functions
• Computing multiple integrals
• Interpolation
• Computing a polynomial interpolation for a set of data points
• Univariate interpolation
• Finding a cubic spline that interpolates a set of data
• Defining a B-spline for a given set of control points
• Differentiation
• Solving a one-dimensional ordinary differential equation
• Solving a system of ordinary differential equations
• Solving differential equations and systems with parameters
• Using ode and the objected-oriented interface to solve differential equations