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{PSTYLE "Normal" -1 0 1 {CSTYLE "" -1 -1 "" 0 1 0 0 0 0 0 0 0 0 0 0 0 
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{CSTYLE "" -1 -1 "Courier" 1 10 0 0 255 1 0 0 0 0 0 1 3 0 3 0 }1 0 0 
-1 -1 -1 0 0 0 0 0 0 -1 0 }{PSTYLE "Warning" 2 7 1 {CSTYLE "" -1 -1 "
" 0 1 0 0 255 1 0 0 0 0 0 0 1 0 0 0 }0 0 0 -1 -1 -1 0 0 0 0 0 0 -1 0 }
{PSTYLE "Error" 7 8 1 {CSTYLE "" -1 -1 "" 0 1 255 0 255 1 0 0 0 0 0 0 
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0 0 0 0 0 0 -1 0 }}
{SECT 0 {EXCHG {PARA 0 "> " 0 "" {MPLTEXT 1 0 28 "# Put your name on t
his line" }}}{EXCHG {PARA 0 "> " 0 "" {MPLTEXT 1 0 16 "# Fix the error
s" }}}{EXCHG {PARA 0 "> " 0 "" {MPLTEXT 1 0 32 ";# put missing command
 before # " }}}{EXCHG {PARA 0 "> " 0 "" {MPLTEXT 1 0 47 "contourplot(s
in(x)*sin(y),x=0..2*Pi,y=0..2*Pi);" }}{PARA 11 "" 1 "" {XPPMATH 20 "6#
-%,contourplotG6%*&-%$sinG6#%\"xG\"\"\"-F(6#%\"yGF+/F*;\"\"!,$%#PiG\"
\"#/F.F0" }}}{EXCHG {PARA 0 "> " 0 "" {MPLTEXT 1 0 34 "plot3d(x^3-3xy^
2,x=-3..3,y=-3..3);" }}{PARA 8 "" 1 "" {TEXT -1 31 "Error, missing ope
rator or `;`\n" }}}{EXCHG {PARA 0 "> " 0 "" {MPLTEXT 1 0 29 "plot3d(x*
y,x=-3..-3,y=-3..3);" }}{PARA 8 "" 1 "" {TEXT -1 44 "Error, (in plot3d
) ranges must be non-empty\n" }}}{EXCHG {PARA 0 "> " 0 "" {MPLTEXT 1 
0 53 "contourplot(x^2+y,x=-1..1,y=-1..l);#hard typo to find" }}}
{EXCHG {PARA 0 "> " 0 "" {MPLTEXT 1 0 40 "spacecurve([cos(t),sin(t)],t
=0..5*Pi/4);" }}{PARA 8 "" 1 "" {TEXT -1 57 "Error, (in spacecurve) im
proper op or subscript selector\n" }}}{EXCHG {PARA 0 "> " 0 "" 
{MPLTEXT 1 0 15 "#pi,Pi,e,E,exp," }}}{EXCHG {PARA 0 "> " 0 "" 
{MPLTEXT 1 0 13 "pi;evalf(pi);" }}{PARA 11 "" 1 "" {XPPMATH 20 "6#%#pi
G" }}{PARA 11 "" 1 "" {XPPMATH 20 "6#%#piG" }}}{EXCHG {PARA 0 "> " 0 "
" {MPLTEXT 1 0 26 "Pi;evalf(Pi);evalf(Pi,50);" }}{PARA 11 "" 1 "" 
{XPPMATH 20 "6#%#PiG" }}{PARA 11 "" 1 "" {XPPMATH 20 "6#$\"+aEfTJ!\"*
" }}{PARA 11 "" 1 "" {XPPMATH 20 "6#$\"S^P*Rpr>%)G]zKQVEYQKz*e`EfTJ!#
\\" }}}{EXCHG {PARA 0 "> " 0 "" {MPLTEXT 1 0 22 "e;E;evalf(e);evalf(E)
;" }}{PARA 11 "" 1 "" {XPPMATH 20 "6#%\"eG" }}{PARA 11 "" 1 "" 
{XPPMATH 20 "6#%\"EG" }}{PARA 11 "" 1 "" {XPPMATH 20 "6#%\"eG" }}
{PARA 11 "" 1 "" {XPPMATH 20 "6#%\"EG" }}}{EXCHG {PARA 0 "> " 0 "" 
{MPLTEXT 1 0 38 "exp(1);evalf(exp(1));evalf(exp(1),50);" }}{PARA 11 "
" 1 "" {XPPMATH 20 "6#-%$expG6#\"\"\"" }}{PARA 11 "" 1 "" {XPPMATH 20 
"6#$\"+G=G=F!\"*" }}{PARA 11 "" 1 "" {XPPMATH 20 "6#$\"S+q$4Zsv(\\iENr
uGg`BX!f%G=G=F!#\\" }}}{EXCHG {PARA 0 "> " 0 "" {MPLTEXT 1 0 19 "#More
 errors to fix" }}}{EXCHG {PARA 0 "> " 0 "" {MPLTEXT 1 0 17 "plot(e^x,
x=0..1);" }}}{EXCHG {PARA 0 "> " 0 "" {MPLTEXT 1 0 19 "plot(exp^x,x=0.
.1);" }}}{EXCHG {PARA 0 "> " 0 "" {MPLTEXT 1 0 28 "plot(cos(2*pi*x),x=
0..2*Pi);" }}}{EXCHG {PARA 0 "> " 0 "" {MPLTEXT 1 0 32 "plot((4/5)(cos
(x))+x,x=0..2*Pi);" }}}{EXCHG {PARA 0 "> " 0 "" {MPLTEXT 1 0 32 "# cut
e error, how was this done?" }}}{EXCHG {PARA 0 "> " 0 "" {MPLTEXT 1 0 
5 "a:=2;" }}{PARA 11 "" 1 "" {XPPMATH 20 "6#>%\"aG\"\"#" }}}{EXCHG 
{PARA 0 "> " 0 "" {MPLTEXT 1 0 52 "a+a; #note the original answer has \+
a 5 as an answer." }}{PARA 11 "" 1 "" {XPPMATH 20 "6#\"\"&" }}}{EXCHG 
{PARA 0 "> " 0 "" {MPLTEXT 1 0 2 "a;" }}{PARA 11 "" 1 "" {XPPMATH 20 "
6#\"\"#" }}}{EXCHG {PARA 0 "> " 0 "" {MPLTEXT 1 0 44 "# Is this an err
or? The plots look different" }}}{EXCHG {PARA 0 "> " 0 "" {MPLTEXT 1 
0 49 "saddle1:=plot3d(x^2-y^2,x=-3..3,y=-3..3):saddle1;" }}}{EXCHG 
{PARA 0 "> " 0 "" {MPLTEXT 1 0 67 "saddle2:=implicitplot3d(z=x^2-y^2,x
=-3..3,y=-3..3,z=-3..3):saddle2;" }}}{EXCHG {PARA 0 "> " 0 "" 
{MPLTEXT 1 0 33 "# show them together with display" }}}{EXCHG {PARA 0 
"> " 0 "" {MPLTEXT 1 0 11 "f:=x^2+y^2;" }}{PARA 11 "" 1 "" {XPPMATH 
20 "6#>%\"fG,&*$)%\"xG\"\"#\"\"\"F**$)%\"yGF)F*F*" }}}{EXCHG {PARA 0 "
> " 0 "" {MPLTEXT 1 0 39 "plot3d(f,x=-1..1,y=-1..1); # no problem" }}}
{EXCHG {PARA 0 "> " 0 "" {MPLTEXT 1 0 10 "g=x^2+y^2;" }}{PARA 11 "" 1 
"" {XPPMATH 20 "6#/%\"gG,&*$)%\"xG\"\"#\"\"\"F**$)%\"yGF)F*F*" }}}
{EXCHG {PARA 0 "> " 0 "" {MPLTEXT 1 0 26 "plot3d(g,x=-1..1,y=-1..1);" 
}}{PARA 8 "" 1 "" {TEXT -1 26 "Plotting error, empty plot" }}}{EXCHG 
{PARA 0 "> " 0 "" {MPLTEXT 1 0 17 "# never do f(x):=" }}}{EXCHG {PARA 
0 "> " 0 "" {MPLTEXT 1 0 10 "h(z):=z^2;" }}{PARA 11 "" 1 "" {XPPMATH 
20 "6#>-%\"hG6#%\"zG*$)F'\"\"#\"\"\"" }}}{EXCHG {PARA 0 "> " 0 "" 
{MPLTEXT 1 0 5 "h(3);" }}{PARA 11 "" 1 "" {XPPMATH 20 "6#-%\"hG6#\"\"$
" }}}{EXCHG {PARA 0 "> " 0 "" {MPLTEXT 1 0 5 "h(x);" }}{PARA 11 "" 1 "
" {XPPMATH 20 "6#-%\"hG6#%\"xG" }}}{EXCHG {PARA 0 "> " 0 "" {MPLTEXT 
1 0 48 "# don't assign to variables you are going to use" }}}{EXCHG 
{PARA 0 "> " 0 "" {MPLTEXT 1 0 12 "fp:=p^2+q^2;" }}{PARA 11 "" 1 "" 
{XPPMATH 20 "6#>%#fpG,&*$)%\"pG\"\"#\"\"\"F**$)%\"qGF)F*F*" }}}{EXCHG 
{PARA 0 "> " 0 "" {MPLTEXT 1 0 5 "p:=7;" }}{PARA 11 "" 1 "" {XPPMATH 
20 "6#>%\"pG\"\"(" }}}{EXCHG {PARA 0 "> " 0 "" {MPLTEXT 1 0 27 "plot3d
(fp,p=-1..1,q=-1..1);" }}{PARA 8 "" 1 "" {TEXT -1 76 "Error, (in plot3
d/expression) bad range arguments, 7 = -1 .. 1, q = -1 .. 1\n" }}}
{EXCHG {PARA 0 "> " 0 "" {MPLTEXT 1 0 27 "# this is undone by p:='p';
" }}}{EXCHG {PARA 0 "> " 0 "" {MPLTEXT 1 0 27 "solve(\{x+y=3,x-y=1\},
\{x,y\});" }}{PARA 11 "" 1 "" {XPPMATH 20 "6#<$/%\"yG\"\"\"/%\"xG\"\"#
" }}}{EXCHG {PARA 0 "> " 0 "" {MPLTEXT 1 0 28 "solve(\{x+y:=3,x-y=1\},
\{x,y\});" }}{PARA 8 "" 1 "" {TEXT -1 23 "Error, `:=` unexpected\n" }}
}{EXCHG {PARA 0 "> " 0 "" {MPLTEXT 1 0 38 "plot3d(sin(x+y),x=0..2*Pi,y
:=0..2*Pi);" }}{PARA 8 "" 1 "" {TEXT -1 23 "Error, `:=` unexpected\n" 
}}}{EXCHG {PARA 0 "> " 0 "" {MPLTEXT 1 0 37 "plot3d(sin(x+y),x=0,,2*Pi
,y=0..2*Pi);" }}{PARA 8 "" 1 "" {TEXT -1 22 "Error, `,` unexpected\n" 
}}}}{MARK "42 0 0" 20 }{VIEWOPTS 1 1 0 1 1 1803 1 1 1 1 }{PAGENUMBERS 
0 1 2 33 1 1 }