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{SECT 0 {PARA 0 "" 0 "" {TEXT 256 73 "                                \+
      Homework problem - Section 2.3 - 25" }}{PARA 0 "" 0 "" {TEXT 
258 82 "This problem can be solved exactly but the answer cannot be ev
aluated for specific" }}{PARA 0 "" 0 "" {TEXT 259 42 "values of x with
out numerical integration." }}{PARA 0 "" 0 "" {TEXT -1 0 "" }}{PARA 0 
"" 0 "" {TEXT 257 6 "      " }{TEXT -1 0 "" }}{EXCHG {PARA 0 "> " 0 "
" {MPLTEXT 1 0 8 "restart;" }}}{EXCHG {PARA 0 "> " 0 "" {MPLTEXT 1 0 
31 "eqn := diff(y(x),x)+ 2*x*y = 1;" }}}{EXCHG {PARA 0 "> " 0 "" 
{MPLTEXT 1 0 26 "dsolve(\{eqn,y(2)=1\},y(x));" }}}{EXCHG {PARA 0 "> " 
0 "" {MPLTEXT 1 0 14 "ans := rhs(\");" }}}{EXCHG {PARA 0 "> " 0 "" 
{MPLTEXT 1 0 21 "evalf(subs(x=3,ans));" }}}{PARA 0 "" 0 "" {TEXT -1 
80 "          Solve the equation in example (see lecture notes - Wed J
an 28) to get:" }{TEXT -1 0 "" }}{EXCHG {PARA 0 "> " 0 "" {MPLTEXT 1 
0 52 "u := x -> exp(-x^2)*(exp(4) + int(exp(s^2),s=2..x));" }}}{EXCHG 
{PARA 0 "> " 0 "" {MPLTEXT 1 0 12 "evalf(u(3));" }}}{EXCHG {PARA 0 "> \+
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1803 }