Differential equation plots, Plot window parameters, Solving differential equations -10 – HP 49g Graphing Calculator User Manual
Page 83: Dy/dt = t + y, Differential, Equation plots
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Differential
equation plots
A differential equation is an equation that involves one or more
derivatives. An example is
dy/dt = t + y.
^^F-LC'T HinDOH - DIFF
H-Mi £>U
e.5
V-Vi4H:-3.1
7
p
Ini-t:
0.
Finol:
e.5
S+.4p: DiFdiJl.t K'l. .0001
DiF^uU
Eritfli* HirixHUH hi>i-i20nt'3l. •JiOlUfl
SETUPS
F:F3i:t>
H-V
stiff
IndCp:t
H-TiCh:10. M-TicH:iO.
¿PiXi li
Ch*><«5C type
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Figure 4-11: Default plot window and plot setup parameters for plotting differential equations
/
A , , ,
, 1
Figure 4-12: Sample differential equation plot
Plot window parameters
H-View
The horizontal display range, ■with the minimum
horizontal value in the first field and maximum horizontal
value in the second field.
V-View
The vertical display range, "with the minimum vertical
value in the first field and maximum vertical value in the
second field.
Init
The independent variable’s initial value. (This must
con-espond to the initial value of the solution variable.)
Final
The independent variable’s final value.
Init-Soln
The solution variable’s initial value.
Tol
An indication of acceptable tolerance, that is, the
acceptable level of absolute error. (The default value is
0
.
0001
.)
Step
The initial step size used to compute the solution.
Plotting graphs
Page 4-15