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{SECT 0 {EXCHG {PARA 0 "> " 0 "" {MPLTEXT 1 0 12 "with(plots):" }}}
{EXCHG {PARA 0 "" 0 "" {TEXT -1 145 "Example 2, p. 686:\n\n           \+
                                      F(t)  =  (2 sin t)i  -  (2 cos t
)j  +  (3t)k\n           What is the graph ?\n" }}{PARA 0 "> " 0 "" 
{MPLTEXT 1 0 73 "spacecurve([2*sin(t),-2*cos(t),3*t],t=0..9*Pi,numpoin
ts=200,axes=NORMAL);" }}}{EXCHG {PARA 0 "" 0 "" {TEXT -1 136 "Excercis
e 12, p. 690:\n\n                                                 F(t)
  =  (2 cos t)i  +  (sin t)j\n           What is the graph ?\n" }}
{PARA 0 "> " 0 "" {MPLTEXT 1 0 34 "plot([2*cos(t),sin(t),t=0..9*Pi]);
" }}}{EXCHG {PARA 0 "" 0 "" {TEXT -1 99 "Excercise 26, p. 691:\n\n    \+
        Find a vector function whose graph is   x^2 + y^2 =4;  z = -1 \+
.\n" }}{PARA 0 "> " 0 "" {MPLTEXT 1 0 0 "" }}}}{MARK "1 0 0" 14 }
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