# Chapter 14 - Differential Equations; The Calc/diff Menu; Solution To Linear And Non-linear Equations - HP 48gII User Manual

Graphing calculator.

Chapter 14
Differential Equations
In this Chapter we present examples of solving ordinary differential equations
(ODE) using calculator functions. A differential equation is an equation
involving derivatives of the independent variable. In most cases, we seek the
dependent function that satisfies the differential equation.

provides functions for the solution of differential equations. The menu is listed
below with system flag 117 set to CHOOSE boxes:
These functions are briefly described next. They will be described in more
detail in later parts of this Chapter.
DESOLVE: Differential Equation SOLVEr, solves differential equations, when
possible
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ILAP: Inverse LAPlace transform, L
[F(s)] = f(t)
LAP: LAPlace transform, L[f(t)]=F(s)
LDEC: Linear Differential Equation Command

### Solution to linear and non-linear equations

An equation in which the dependent variable and all its pertinent derivatives
are of the first degree is referred to as a linear differential equation.
Otherwise, the equation is said to be non-linear.
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