Casio ALGEBRA FX2.0 series - Manual (Page 19)

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Example 1 To graph the solution of first order differential equations with two
unknowns below.
(
y
1
)
n= ( y
2
), ( y
2
)
n = – ( y
1
) + sin x , x
0
= 0, ( y
1
)
0
= 1, ( y
2
)
0
= 0.1, –2 < x < 5, h = 0.1.
Use the following V-Window settings.
Xmin = –3, Xmax = 6, Xscale = 1
Ymin = –2, Ymax = 2, Yscale = 1
Procedure
1 m DIFF EQ
2 4(SYS)
3 2(2)
4 3( yn )cw
-3( yn )b+svw
5 a w
b w
a.b w
6 5(SET)b(Param)
7 -cw
f w
8 a.b w* 1 i
9 5(SET)c(Output)4(INIT)
cc1(SEL)
(Select (
y
1
) and ( y
2
) to graph)* 2
i
0 !K(V-Window)
-dw
g w
b wc
-cw
c w
b wi
! 6(CALC)
Result Screen
5-2
System of First Order Differential Equations
* 1 * 2