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-1 46 "  Maple Worksheet:  Chapter 1 direction fields" }}{PARA 0 "" 0 
"" {TEXT -1 0 "" }}{PARA 0 "" 0 "" {TEXT -1 79 "Maple file to produce \+
the direction fields in Exercises 27 and 29, Section 1.1." }}{PARA 0 "
" 0 "" {TEXT -1 93 "You can execute all the commands at once by pressi
ng the triple exclamation point button, !!!" }}{PARA 0 "" 0 "" {TEXT 
-1 0 "" }}}{EXCHG {PARA 0 "> " 0 "" {MPLTEXT 1 0 8 "restart;" }}}
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{PARA 0 "> " 0 "" {MPLTEXT 1 0 14 "with(DEtools):" }}}{EXCHG {PARA 0 "
> " 0 "" {MPLTEXT 1 0 67 "DE27:=diff(y(t),t)=t*exp(-2*t)-2*y(t);\nDE29
:=diff(y(t),t)=t+2*y(t);" }}}{EXCHG {PARA 0 "> " 0 "" {MPLTEXT 1 0 34 
"DEplot(DE27,y(t),t=-5..5,y=-5..5);" }}}{EXCHG {PARA 0 "> " 0 "" 
{MPLTEXT 1 0 34 "DEplot(DE29,y(t),t=-5..5,y=-5..5);" }}}{EXCHG {PARA 
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