Differential equations, Solving differential equations, Solving differential equations -1 – HP 48g Graphing Calculator User Manual
Page 227: Plotting a stiff differential equation -9
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19
Differential Equations
The HP 48 can find a solution, to a differential equation
expressed as y'(i) =
where the initial value of the solution is
given as y{to) = yo.
Solving Differential Equations
The differential equation solver is part of the SOLVE application.
To use the SOLVE differential equation solwer:
19
1. Press
2. Select Solve dit'f eq,,
solví
r a y = F a , n ^ m m
INDER:
X
INIT: 0
FINflL:6.5
SOLN: Y INIT: 0
FINAL:
TDL:.0001 STEF: Df It _STIFF
ENTER FUNCTION 0F INDER AND SOLN
This screen contains the following fields and menu keys;
F 5
Contains the right-hand side of the differential equation
you want to solve.
INDEFv: Specifies the independent variable. (Defaults to X.)
Contains the independent variable’s initial value (to)- The
initial value of the independent variable must correspond
to the initial value of the solution variable: y{to) = yo-
Differential Equations 19-1