Fail to invoke g(f(x))
up vote
7
down vote
favorite
I want to invoke g(f(x)) which is equal to x actually. However the following does not compile in PostScript stage (I think). Could you fix it? I am not asking how to plot y=x but how to invoke the composition function g(f(x)).
MWE
documentclass[pstricks,border=12pt]{standalone}
usepackage{pst-plot}
deff(#1){((#1-2)/(2*(#1)+1))}% y=f(x)
defg(#1){((2+#1)/(1-2*(#1)))}% y=g(x) in which g is the inverse of f.
begin{document}
begin{pspicture}[algebraic](-4,-4)(6,6)
psaxes{->}(0,0)(-4,-4)(5.5,5.5)[$x$,0][$y$,90]
psset{linecolor=blue,linewidth=2pt}
psplot{-4}{5}{g(f(x))}
end{pspicture}
end{document}
pstricks
asked Nov 18 at 5:39
Artificial Stupidity
4,5991832
add a comment |
up vote
7
down vote
favorite
I want to invoke g(f(x)) which is equal to x actually. However the following does not compile in PostScript stage (I think). Could you fix it? I am not asking how to plot y=x but how to invoke the composition function g(f(x)).
MWE
documentclass[pstricks,border=12pt]{standalone}
usepackage{pst-plot}
deff(#1){((#1-2)/(2*(#1)+1))}% y=f(x)
defg(#1){((2+#1)/(1-2*(#1)))}% y=g(x) in which g is the inverse of f.
begin{document}
begin{pspicture}[algebraic](-4,-4)(6,6)
psaxes{->}(0,0)(-4,-4)(5.5,5.5)[$x$,0][$y$,90]
psset{linecolor=blue,linewidth=2pt}
psplot{-4}{5}{g(f(x))}
end{pspicture}
end{document}
pstricks
asked Nov 18 at 5:39
Artificial Stupidity
4,5991832
2
Usedeff#1{((#1-2)/(2*(#1)+1))} defg#1{((2+#1)/(1-2*(#1)))}andpsplot{-4}{5}{g{f{x}}}, i.e. the usual curly braces instead of round ones. When you usedeff(#1)you are using delimited arguments which have problems when you nest calls (like the[and]of optional arguments)
– moewe
Nov 18 at 5:53
1
It is the same situation as forbegin{lstlisting}[language={[LaTeX]TeX}]. The inner[...]have to be braced.
– Herbert
Nov 18 at 8:47
@Herbert: I found a bug inpstTriangle. It cannot acceptRand. For example:pstTriangle(0,0){A}(3,4){B}(!.5 Rand sub 10 mul 3){C}does not compile.
– Artificial Stupidity
6 hours ago
tx@Dict begin Rand end
– Herbert
4 hours ago
add a comment |
up vote
7
down vote
favorite
up vote
7
down vote
favorite
I want to invoke g(f(x)) which is equal to x actually. However the following does not compile in PostScript stage (I think). Could you fix it? I am not asking how to plot y=x but how to invoke the composition function g(f(x)).
MWE
documentclass[pstricks,border=12pt]{standalone}
usepackage{pst-plot}
deff(#1){((#1-2)/(2*(#1)+1))}% y=f(x)
defg(#1){((2+#1)/(1-2*(#1)))}% y=g(x) in which g is the inverse of f.
begin{document}
begin{pspicture}[algebraic](-4,-4)(6,6)
psaxes{->}(0,0)(-4,-4)(5.5,5.5)[$x$,0][$y$,90]
psset{linecolor=blue,linewidth=2pt}
psplot{-4}{5}{g(f(x))}
end{pspicture}
end{document}
pstricks
asked Nov 18 at 5:39
Artificial Stupidity
4,5991832
I want to invoke g(f(x)) which is equal to x actually. However the following does not compile in PostScript stage (I think). Could you fix it? I am not asking how to plot y=x but how to invoke the composition function g(f(x)).
MWE
documentclass[pstricks,border=12pt]{standalone}
usepackage{pst-plot}
deff(#1){((#1-2)/(2*(#1)+1))}% y=f(x)
defg(#1){((2+#1)/(1-2*(#1)))}% y=g(x) in which g is the inverse of f.
begin{document}
begin{pspicture}[algebraic](-4,-4)(6,6)
psaxes{->}(0,0)(-4,-4)(5.5,5.5)[$x$,0][$y$,90]
psset{linecolor=blue,linewidth=2pt}
psplot{-4}{5}{g(f(x))}
end{pspicture}
end{document}
pstricks
pstricks
asked Nov 18 at 5:39
Artificial Stupidity
4,5991832
asked Nov 18 at 5:39
Artificial Stupidity
4,5991832
asked Nov 18 at 5:39
Artificial Stupidity
4,5991832
asked Nov 18 at 5:39
Artificial Stupidity
4,5991832
asked Nov 18 at 5:39
Artificial Stupidity
4,5991832
4,5991832
2
Usedeff#1{((#1-2)/(2*(#1)+1))} defg#1{((2+#1)/(1-2*(#1)))}andpsplot{-4}{5}{g{f{x}}}, i.e. the usual curly braces instead of round ones. When you usedeff(#1)you are using delimited arguments which have problems when you nest calls (like the[and]of optional arguments)
– moewe
Nov 18 at 5:53
1
It is the same situation as forbegin{lstlisting}[language={[LaTeX]TeX}]. The inner[...]have to be braced.
– Herbert
Nov 18 at 8:47
@Herbert: I found a bug inpstTriangle. It cannot acceptRand. For example:pstTriangle(0,0){A}(3,4){B}(!.5 Rand sub 10 mul 3){C}does not compile.
– Artificial Stupidity
6 hours ago
tx@Dict begin Rand end
– Herbert
4 hours ago
add a comment |
2
Usedeff#1{((#1-2)/(2*(#1)+1))} defg#1{((2+#1)/(1-2*(#1)))}andpsplot{-4}{5}{g{f{x}}}, i.e. the usual curly braces instead of round ones. When you usedeff(#1)you are using delimited arguments which have problems when you nest calls (like the[and]of optional arguments)
– moewe
Nov 18 at 5:53
1
It is the same situation as forbegin{lstlisting}[language={[LaTeX]TeX}]. The inner[...]have to be braced.
– Herbert
Nov 18 at 8:47
@Herbert: I found a bug inpstTriangle. It cannot acceptRand. For example:pstTriangle(0,0){A}(3,4){B}(!.5 Rand sub 10 mul 3){C}does not compile.
– Artificial Stupidity
6 hours ago
tx@Dict begin Rand end
– Herbert
4 hours ago
2
2
Use
deff#1{((#1-2)/(2*(#1)+1))} defg#1{((2+#1)/(1-2*(#1)))} and psplot{-4}{5}{g{f{x}}}, i.e. the usual curly braces instead of round ones. When you use deff(#1) you are using delimited arguments which have problems when you nest calls (like the [ and ] of optional arguments)– moewe
Nov 18 at 5:53
Use
deff#1{((#1-2)/(2*(#1)+1))} defg#1{((2+#1)/(1-2*(#1)))} and psplot{-4}{5}{g{f{x}}}, i.e. the usual curly braces instead of round ones. When you use deff(#1) you are using delimited arguments which have problems when you nest calls (like the [ and ] of optional arguments)– moewe
Nov 18 at 5:53
1
1
It is the same situation as for
begin{lstlisting}[language={[LaTeX]TeX}]. The inner [...] have to be braced.– Herbert
Nov 18 at 8:47
It is the same situation as for
begin{lstlisting}[language={[LaTeX]TeX}]. The inner [...] have to be braced.– Herbert
Nov 18 at 8:47
@Herbert: I found a bug in
pstTriangle. It cannot accept Rand. For example: pstTriangle(0,0){A}(3,4){B}(!.5 Rand sub 10 mul 3){C} does not compile.– Artificial Stupidity
6 hours ago
@Herbert: I found a bug in
pstTriangle. It cannot accept Rand. For example: pstTriangle(0,0){A}(3,4){B}(!.5 Rand sub 10 mul 3){C} does not compile.– Artificial Stupidity
6 hours ago
tx@Dict begin Rand end– Herbert
4 hours ago
tx@Dict begin Rand end– Herbert
4 hours ago
add a comment |
1 Answer
1
active
oldest
votes
up vote
10
down vote
accepted
The use of similar parameter text for f and g is what causes the problem here. The first occurrence of a (...) pair is used to extract the arguments. So, in
g(f(<x>))
passes the incomplete f(<x> as the argument to g. To get around this, brace the argument to avoid confusion:
documentclass{article}
usepackage{pst-plot}
deff(#1){((#1-2)/(2*(#1)+1))}% y=f(x)
defg(#1){((2+#1)/(1-2*(#1)))}% y=g(x) in which g is the inverse of f.
begin{document}
begin{pspicture}[algebraic](-4,-4)(6,6)
psaxes{->}(0,0)(-4,-4)(5.5,5.5)[$x$,0][$y$,90]
psset{linecolor=blue,linewidth=2pt}
psplot{-4}{5}{g({f(x)})}
end{pspicture}
end{document}
answered Nov 18 at 5:58
Werner
431k599491626
add a comment |
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
10
down vote
accepted
The use of similar parameter text for f and g is what causes the problem here. The first occurrence of a (...) pair is used to extract the arguments. So, in
g(f(<x>))
passes the incomplete f(<x> as the argument to g. To get around this, brace the argument to avoid confusion:
documentclass{article}
usepackage{pst-plot}
deff(#1){((#1-2)/(2*(#1)+1))}% y=f(x)
defg(#1){((2+#1)/(1-2*(#1)))}% y=g(x) in which g is the inverse of f.
begin{document}
begin{pspicture}[algebraic](-4,-4)(6,6)
psaxes{->}(0,0)(-4,-4)(5.5,5.5)[$x$,0][$y$,90]
psset{linecolor=blue,linewidth=2pt}
psplot{-4}{5}{g({f(x)})}
end{pspicture}
end{document}
answered Nov 18 at 5:58
Werner
431k599491626
add a comment |
up vote
10
down vote
accepted
The use of similar parameter text for f and g is what causes the problem here. The first occurrence of a (...) pair is used to extract the arguments. So, in
g(f(<x>))
passes the incomplete f(<x> as the argument to g. To get around this, brace the argument to avoid confusion:
documentclass{article}
usepackage{pst-plot}
deff(#1){((#1-2)/(2*(#1)+1))}% y=f(x)
defg(#1){((2+#1)/(1-2*(#1)))}% y=g(x) in which g is the inverse of f.
begin{document}
begin{pspicture}[algebraic](-4,-4)(6,6)
psaxes{->}(0,0)(-4,-4)(5.5,5.5)[$x$,0][$y$,90]
psset{linecolor=blue,linewidth=2pt}
psplot{-4}{5}{g({f(x)})}
end{pspicture}
end{document}
answered Nov 18 at 5:58
Werner
431k599491626
add a comment |
up vote
10
down vote
accepted
up vote
10
down vote
accepted
The use of similar parameter text for f and g is what causes the problem here. The first occurrence of a (...) pair is used to extract the arguments. So, in
g(f(<x>))
passes the incomplete f(<x> as the argument to g. To get around this, brace the argument to avoid confusion:
documentclass{article}
usepackage{pst-plot}
deff(#1){((#1-2)/(2*(#1)+1))}% y=f(x)
defg(#1){((2+#1)/(1-2*(#1)))}% y=g(x) in which g is the inverse of f.
begin{document}
begin{pspicture}[algebraic](-4,-4)(6,6)
psaxes{->}(0,0)(-4,-4)(5.5,5.5)[$x$,0][$y$,90]
psset{linecolor=blue,linewidth=2pt}
psplot{-4}{5}{g({f(x)})}
end{pspicture}
end{document}
answered Nov 18 at 5:58
Werner
431k599491626
The use of similar parameter text for f and g is what causes the problem here. The first occurrence of a (...) pair is used to extract the arguments. So, in
g(f(<x>))
passes the incomplete f(<x> as the argument to g. To get around this, brace the argument to avoid confusion:
documentclass{article}
usepackage{pst-plot}
deff(#1){((#1-2)/(2*(#1)+1))}% y=f(x)
defg(#1){((2+#1)/(1-2*(#1)))}% y=g(x) in which g is the inverse of f.
begin{document}
begin{pspicture}[algebraic](-4,-4)(6,6)
psaxes{->}(0,0)(-4,-4)(5.5,5.5)[$x$,0][$y$,90]
psset{linecolor=blue,linewidth=2pt}
psplot{-4}{5}{g({f(x)})}
end{pspicture}
end{document}
answered Nov 18 at 5:58
Werner
431k599491626
answered Nov 18 at 5:58
Werner
431k599491626
answered Nov 18 at 5:58
Werner
431k599491626
answered Nov 18 at 5:58
Werner
431k599491626
431k599491626
add a comment |
add a comment |
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Use
deff#1{((#1-2)/(2*(#1)+1))} defg#1{((2+#1)/(1-2*(#1)))}andpsplot{-4}{5}{g{f{x}}}, i.e. the usual curly braces instead of round ones. When you usedeff(#1)you are using delimited arguments which have problems when you nest calls (like the[and]of optional arguments)– moewe
Nov 18 at 5:53
1
It is the same situation as for
begin{lstlisting}[language={[LaTeX]TeX}]. The inner[...]have to be braced.– Herbert
Nov 18 at 8:47
@Herbert: I found a bug in
pstTriangle. It cannot acceptRand. For example:pstTriangle(0,0){A}(3,4){B}(!.5 Rand sub 10 mul 3){C}does not compile.– Artificial Stupidity
6 hours ago
tx@Dict begin Rand end– Herbert
4 hours ago