Casio FX2.0 Owner's Manual download pdf (Page 9)

2-6

Differential Equations of the First Order

Example To graph the solution of the Bernoulli equation dy/dx – 2y = –y

x0 = 0, y0 = 1, –5

< x

< 5, h = 0.1.

Use the following V-Window settings.

Xmin = –6.2, Xmax = 6.2, Xscale = 1

Ymin = –3.1, Ymax = 3.1, Yscale = 1

Procedure

1 m DIFF EQ

2 1(1st)d(Bern)

3 -cw

-bw

4aw

5 5(SET)b(Param)

6 -fw

7 a.bwi

8 5(SET)c(Output)4(INIT)i

9 !K(V-Window)

-g.cw

g.cw

bwc

-d.bw

d.bw

bwi

0 6(CALC)

Result Screen

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 21 22

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Casio FX2.0 Owner's Manual Page 9