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{EXCHG {PARA 205 "> " 0 "" {MPLTEXT 1 209 33 "f:=(t,y)-> (4-t*y(t))/(1
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208 0 "" }}{PARA 204 "" 0 "" {TEXT 208 60 "Loop to generate the approx
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"> " 0 "" {MPLTEXT 1 209 30 "tv[1]:=0; yv[1]:=-2; h:= 0.05;" }
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{PARA 204 "" 0 "" {TEXT 208 60 "Loop to generate the approximations at
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fev:=f(tv[i],yv[i]); tv[i+1]:= i*h;" }{MPLTEXT 1 209 0 "" }}{PARA 205 
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0 "" }}}{EXCHG {PARA 204 "" 0 "" {TEXT 208 0 "" }}{PARA 204 "" 0 "" 
{TEXT 208 39 "Printing the results at selected points" }{TEXT 208 0 ""
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{MPLTEXT 1 209 21 "for i by 10 to 101 do" }{MPLTEXT 1 209 0 "" }}
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1 209 0 "" }}}{EXCHG {PARA 207 "" 0 "" {TEXT 210 0 "" }}{PARA 207 "" 0
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0 "" }}{PARA 207 "" 0 "" {TEXT 210 0 "" }}}{EXCHG {PARA 208 "> " 0 "" 
{MPLTEXT 1 211 14 "3.5175-3.4446;" }{MPLTEXT 1 211 0 "" }}}{EXCHG 
{PARA 208 "> " 0 "" {MPLTEXT 1 211 13 "%*100/3.5175;" }{MPLTEXT 1 211 
0 "" }}}{EXCHG {PARA 208 "> " 0 "" {MPLTEXT 1 211 14 "3.4517-3.4446;" 
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%*100/3.4446;" }{MPLTEXT 1 211 0 "" }}}{EXCHG {PARA 207 "" 0 "" {TEXT 
210 51 "Analyzing direction fields for both book's examples" }{TEXT 
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{MPLTEXT 1 211 114 "DEplot(eq1, y(t),t=-1..10, y=-10..10, dirgrid=[30,
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208 "> " 0 "" {MPLTEXT 1 211 113 "DEplot(eq2, y(t),t=-1..2, y=-20..20,
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