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{SECT 0 {EXCHG {PARA 0 "" 0 "" {TEXT -1 9 "#7, p. 14" }}}{EXCHG {PARA 
0 "> " 0 "" {MPLTEXT 1 0 41 "de:=diff(y(x),x$2)-diff(y(x),x)-2*y(x)=0;
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" 0 "" {MPLTEXT 1 0 72 "restart;expr:=exp(x*y(x))+y(x)=x-1;\ndiff(expr
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#17, p. 15" }}}{EXCHG {PARA 0 "> " 0 "" {MPLTEXT 1 0 111 "restart; plo
t(\{2/(1+2*exp(x)),2/(1+1*exp(x)), 2/(1+0*exp(x)),2/(1-1*exp(x)),2/(1-
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1 0 36 "restart;p(x):=c1*exp(x)+c2*x*exp(x);" }}}{EXCHG {PARA 0 "> " 
0 "" {MPLTEXT 1 0 39 "de:=diff(y(x),x,x)-2*diff(y(x),x)+y(x);" }}}
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