How to add conditions in LATEX macros?
I would like to create custom macros with conditions.
For example, I would like to add an "if-condition" to a macro that I created to write derivatives of any order in relation to a single variable.
Here is the current code of my macro:
newcommand{df}{mathrm{d}}
newcommand{drv}[3]{dfrac{df #2^#1}{df #3^#1}}
The first argument #1 is the order of derivation, the second #2 the function that we take the derivative and the third #3 the variable of derivation.
For example,
drv{n}{f}{x}
will give
I would like to change this code so that it don't display the derivation order #1 if it is equal to 1. But I don't know the syntax, this is why I need your help. I want to write something like
newcommand{drv}[3]{
if #1=1
dfrac{df #2}{df #3}
else
dfrac{df ^#1 #2}{df #3^#1}
}
Thank you for your help, have a good day.
macros conditionals condition
edited 4 mins ago
Christian Hupfer
148k14193387
asked 43 mins ago
Loïc
135
New contributor
Loïc is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
|
show 1 more comment
I would like to create custom macros with conditions.
For example, I would like to add an "if-condition" to a macro that I created to write derivatives of any order in relation to a single variable.
Here is the current code of my macro:
newcommand{df}{mathrm{d}}
newcommand{drv}[3]{dfrac{df #2^#1}{df #3^#1}}
The first argument #1 is the order of derivation, the second #2 the function that we take the derivative and the third #3 the variable of derivation.
For example,
drv{n}{f}{x}
will give
I would like to change this code so that it don't display the derivation order #1 if it is equal to 1. But I don't know the syntax, this is why I need your help. I want to write something like
newcommand{drv}[3]{
if #1=1
dfrac{df #2}{df #3}
else
dfrac{df ^#1 #2}{df #3^#1}
}
Thank you for your help, have a good day.
macros conditionals condition
edited 4 mins ago
Christian Hupfer
148k14193387
asked 43 mins ago
Loïc
135
New contributor
Loïc is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
@ChristianHupfer Thank you. I know but I would like to create my own macros, this is just a simple example to understand the use of conditions.
– Loïc
37 mins ago
There already existesdiffanddiffcoeffpackages which already can do that (and more: they consider the case of partial derivatives of any order). Why reinvent the wheel?
– Bernard
25 mins ago
@Bernard the OP said this was just a specific example of a more general question about writing macros.
– alephzero
21 mins ago
@Bernard I think the question of the OP goes more in the direction of 'How to create macros with conditions?' The derivative is just an example, so using a package will not help him in this case
– caverac
21 mins ago
@Bernard thank you for introducing me to these packages. Indeed, I was mainly looking to know how to use "if-conditions", the derivation was only one example.
– Loïc
18 mins ago
|
show 1 more comment
I would like to create custom macros with conditions.
For example, I would like to add an "if-condition" to a macro that I created to write derivatives of any order in relation to a single variable.
Here is the current code of my macro:
newcommand{df}{mathrm{d}}
newcommand{drv}[3]{dfrac{df #2^#1}{df #3^#1}}
The first argument #1 is the order of derivation, the second #2 the function that we take the derivative and the third #3 the variable of derivation.
For example,
drv{n}{f}{x}
will give
I would like to change this code so that it don't display the derivation order #1 if it is equal to 1. But I don't know the syntax, this is why I need your help. I want to write something like
newcommand{drv}[3]{
if #1=1
dfrac{df #2}{df #3}
else
dfrac{df ^#1 #2}{df #3^#1}
}
Thank you for your help, have a good day.
macros conditionals condition
edited 4 mins ago
Christian Hupfer
148k14193387
asked 43 mins ago
Loïc
135
New contributor
Loïc is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I would like to create custom macros with conditions.
For example, I would like to add an "if-condition" to a macro that I created to write derivatives of any order in relation to a single variable.
Here is the current code of my macro:
newcommand{df}{mathrm{d}}
newcommand{drv}[3]{dfrac{df #2^#1}{df #3^#1}}
The first argument #1 is the order of derivation, the second #2 the function that we take the derivative and the third #3 the variable of derivation.
For example,
drv{n}{f}{x}
will give
I would like to change this code so that it don't display the derivation order #1 if it is equal to 1. But I don't know the syntax, this is why I need your help. I want to write something like
newcommand{drv}[3]{
if #1=1
dfrac{df #2}{df #3}
else
dfrac{df ^#1 #2}{df #3^#1}
}
Thank you for your help, have a good day.
macros conditionals condition
macros conditionals condition
edited 4 mins ago
Christian Hupfer
148k14193387
asked 43 mins ago
Loïc
135
New contributor
Loïc is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 4 mins ago
Christian Hupfer
148k14193387
asked 43 mins ago
Loïc
135
New contributor
Loïc is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 4 mins ago
Christian Hupfer
148k14193387
edited 4 mins ago
Christian Hupfer
148k14193387
edited 4 mins ago
Christian Hupfer
148k14193387
148k14193387
asked 43 mins ago
Loïc
135
New contributor
Loïc is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 43 mins ago
Loïc
135
asked 43 mins ago
Loïc
135
135
New contributor
Loïc is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Loïc is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Loïc is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
@ChristianHupfer Thank you. I know but I would like to create my own macros, this is just a simple example to understand the use of conditions.
– Loïc
37 mins ago
There already existesdiffanddiffcoeffpackages which already can do that (and more: they consider the case of partial derivatives of any order). Why reinvent the wheel?
– Bernard
25 mins ago
@Bernard the OP said this was just a specific example of a more general question about writing macros.
– alephzero
21 mins ago
@Bernard I think the question of the OP goes more in the direction of 'How to create macros with conditions?' The derivative is just an example, so using a package will not help him in this case
– caverac
21 mins ago
@Bernard thank you for introducing me to these packages. Indeed, I was mainly looking to know how to use "if-conditions", the derivation was only one example.
– Loïc
18 mins ago
|
show 1 more comment
@ChristianHupfer Thank you. I know but I would like to create my own macros, this is just a simple example to understand the use of conditions.
– Loïc
37 mins ago
There already existesdiffanddiffcoeffpackages which already can do that (and more: they consider the case of partial derivatives of any order). Why reinvent the wheel?
– Bernard
25 mins ago
@Bernard the OP said this was just a specific example of a more general question about writing macros.
– alephzero
21 mins ago
@Bernard I think the question of the OP goes more in the direction of 'How to create macros with conditions?' The derivative is just an example, so using a package will not help him in this case
– caverac
21 mins ago
@Bernard thank you for introducing me to these packages. Indeed, I was mainly looking to know how to use "if-conditions", the derivation was only one example.
– Loïc
18 mins ago
@ChristianHupfer Thank you. I know but I would like to create my own macros, this is just a simple example to understand the use of conditions.
– Loïc
37 mins ago
@ChristianHupfer Thank you. I know but I would like to create my own macros, this is just a simple example to understand the use of conditions.
– Loïc
37 mins ago
There already exist
esdiff and diffcoeff packages which already can do that (and more: they consider the case of partial derivatives of any order). Why reinvent the wheel?– Bernard
25 mins ago
There already exist
esdiff and diffcoeff packages which already can do that (and more: they consider the case of partial derivatives of any order). Why reinvent the wheel?– Bernard
25 mins ago
@Bernard the OP said this was just a specific example of a more general question about writing macros.
– alephzero
21 mins ago
@Bernard the OP said this was just a specific example of a more general question about writing macros.
– alephzero
21 mins ago
@Bernard I think the question of the OP goes more in the direction of 'How to create macros with conditions?' The derivative is just an example, so using a package will not help him in this case
– caverac
21 mins ago
@Bernard I think the question of the OP goes more in the direction of 'How to create macros with conditions?' The derivative is just an example, so using a package will not help him in this case
– caverac
21 mins ago
@Bernard thank you for introducing me to these packages. Indeed, I was mainly looking to know how to use "if-conditions", the derivation was only one example.
– Loïc
18 mins ago
@Bernard thank you for introducing me to these packages. Indeed, I was mainly looking to know how to use "if-conditions", the derivation was only one example.
– Loïc
18 mins ago
|
show 1 more comment
1 Answer
1
active
oldest
votes
It's easy with xparse:
documentclass{article}
usepackage{amsmath}
usepackage{xparse}
newcommand{df}{mathop{}!d} % use mathrm{d} if you really prefer it
NewDocumentCommand{drv}{omm}{%
frac{dfIfValueT{#1}{^{#1}kern-scriptspace}#2}
{df#3IfValueT{#1}{^{#1}}}%
}
begin{document}
[
drv{f}{x}=f'(x),qquad
drv[n+1]{f}{x}=drv{}{x}drv[n]{f}{x}
]
end{document}
With o an optional argument is denoted; if it is present, IfValueT{#1} will return true and use the argument as shown.
With the given definition, df will behave as expected also in integrals, leaving a thin space before it when necessary.
answered 13 mins ago
egreg
709k8618823165
add a comment |
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1 Answer
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active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
It's easy with xparse:
documentclass{article}
usepackage{amsmath}
usepackage{xparse}
newcommand{df}{mathop{}!d} % use mathrm{d} if you really prefer it
NewDocumentCommand{drv}{omm}{%
frac{dfIfValueT{#1}{^{#1}kern-scriptspace}#2}
{df#3IfValueT{#1}{^{#1}}}%
}
begin{document}
[
drv{f}{x}=f'(x),qquad
drv[n+1]{f}{x}=drv{}{x}drv[n]{f}{x}
]
end{document}
With o an optional argument is denoted; if it is present, IfValueT{#1} will return true and use the argument as shown.
With the given definition, df will behave as expected also in integrals, leaving a thin space before it when necessary.
answered 13 mins ago
egreg
709k8618823165
add a comment |
It's easy with xparse:
documentclass{article}
usepackage{amsmath}
usepackage{xparse}
newcommand{df}{mathop{}!d} % use mathrm{d} if you really prefer it
NewDocumentCommand{drv}{omm}{%
frac{dfIfValueT{#1}{^{#1}kern-scriptspace}#2}
{df#3IfValueT{#1}{^{#1}}}%
}
begin{document}
[
drv{f}{x}=f'(x),qquad
drv[n+1]{f}{x}=drv{}{x}drv[n]{f}{x}
]
end{document}
With o an optional argument is denoted; if it is present, IfValueT{#1} will return true and use the argument as shown.
With the given definition, df will behave as expected also in integrals, leaving a thin space before it when necessary.
answered 13 mins ago
egreg
709k8618823165
add a comment |
It's easy with xparse:
documentclass{article}
usepackage{amsmath}
usepackage{xparse}
newcommand{df}{mathop{}!d} % use mathrm{d} if you really prefer it
NewDocumentCommand{drv}{omm}{%
frac{dfIfValueT{#1}{^{#1}kern-scriptspace}#2}
{df#3IfValueT{#1}{^{#1}}}%
}
begin{document}
[
drv{f}{x}=f'(x),qquad
drv[n+1]{f}{x}=drv{}{x}drv[n]{f}{x}
]
end{document}
With o an optional argument is denoted; if it is present, IfValueT{#1} will return true and use the argument as shown.
With the given definition, df will behave as expected also in integrals, leaving a thin space before it when necessary.
answered 13 mins ago
egreg
709k8618823165
It's easy with xparse:
documentclass{article}
usepackage{amsmath}
usepackage{xparse}
newcommand{df}{mathop{}!d} % use mathrm{d} if you really prefer it
NewDocumentCommand{drv}{omm}{%
frac{dfIfValueT{#1}{^{#1}kern-scriptspace}#2}
{df#3IfValueT{#1}{^{#1}}}%
}
begin{document}
[
drv{f}{x}=f'(x),qquad
drv[n+1]{f}{x}=drv{}{x}drv[n]{f}{x}
]
end{document}
With o an optional argument is denoted; if it is present, IfValueT{#1} will return true and use the argument as shown.
With the given definition, df will behave as expected also in integrals, leaving a thin space before it when necessary.
answered 13 mins ago
egreg
709k8618823165
answered 13 mins ago
egreg
709k8618823165
answered 13 mins ago
egreg
709k8618823165
answered 13 mins ago
egreg
709k8618823165
709k8618823165
add a comment |
add a comment |
Loïc is a new contributor. Be nice, and check out our Code of Conduct.
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@ChristianHupfer Thank you. I know but I would like to create my own macros, this is just a simple example to understand the use of conditions.
– Loïc
37 mins ago
There already exist
esdiffanddiffcoeffpackages which already can do that (and more: they consider the case of partial derivatives of any order). Why reinvent the wheel?– Bernard
25 mins ago
@Bernard the OP said this was just a specific example of a more general question about writing macros.
– alephzero
21 mins ago
@Bernard I think the question of the OP goes more in the direction of 'How to create macros with conditions?' The derivative is just an example, so using a package will not help him in this case
– caverac
21 mins ago
@Bernard thank you for introducing me to these packages. Indeed, I was mainly looking to know how to use "if-conditions", the derivation was only one example.
– Loïc
18 mins ago