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4

I am trying to generate the following equation:

I am working with an old file (I have not written it) that already has the following code for this equation:

begin{equation}

delta(x)equivleft{allbegin{aligned}

0,quad

text{if};xne 0\

infty,quad

text{if}; x=0

end{aligned}right}quad

text{with}quadint_{-infty}^{+infty}delta(x);dx=1.

end{equation}   

But this code doesn't work. Do you know what is wrong with that?

equations align arrays

share|improve this question

asked 6 hours ago

Saeid Saeid

1504

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  After removing the all in the second line, your code seems to produce the desired result
  
  – siracusa
  6 hours ago
  

  
  
  
  

add a comment | 

4

I am trying to generate the following equation:

I am working with an old file (I have not written it) that already has the following code for this equation:

begin{equation}

delta(x)equivleft{allbegin{aligned}

0,quad

text{if};xne 0\

infty,quad

text{if}; x=0

end{aligned}right}quad

text{with}quadint_{-infty}^{+infty}delta(x);dx=1.

end{equation}   

But this code doesn't work. Do you know what is wrong with that?

equations align arrays

share|improve this question

asked 6 hours ago

Saeid Saeid

1504

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  After removing the all in the second line, your code seems to produce the desired result
  
  – siracusa
  6 hours ago
  

  
  
  
  

add a comment | 

I am trying to generate the following equation:

I am working with an old file (I have not written it) that already has the following code for this equation:

begin{equation}

delta(x)equivleft{allbegin{aligned}

0,quad

text{if};xne 0\

infty,quad

text{if}; x=0

end{aligned}right}quad

text{with}quadint_{-infty}^{+infty}delta(x);dx=1.

end{equation}   

But this code doesn't work. Do you know what is wrong with that?

equations align arrays

share|improve this question

asked 6 hours ago

Saeid Saeid

1504

begin{equation}

delta(x)equivleft{allbegin{aligned}

0,quad

text{if};xne 0\

infty,quad

text{if}; x=0

end{aligned}right}quad

text{with}quadint_{-infty}^{+infty}delta(x);dx=1.

end{equation}   

share|improve this question

asked 6 hours ago

Saeid Saeid

1504

share|improve this question

asked 6 hours ago

Saeid Saeid

1504

asked 6 hours ago

Saeid Saeid

1504

asked 6 hours ago

Saeid Saeid

1504

2 Answers
2

active

oldest

votes

4

You can use cases to simplify it a little bit and, of course, remove all as @siracusa said.

documentclass{article}

usepackage{amsmath}

begin{document}



begin{equation}

delta(x)equivleft.begin{cases}

0,      & text{if } x ne 0 \

infty, & text{if } x = 0 

end{cases}right}, quadtext{with } int_{-infty}^{+infty}delta(x); dx = 1.

end{equation}



end{document}

share|improve this answer

answered 5 hours ago

AboAmmarAboAmmar

34.8k32985

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Can you explain left. please? I am guessing it is somehow affecting the size of the opening curly bracket?
  
  – Anush
  21 mins ago
  

  
  
  
  

add a comment | 

3

As @siracusa has already pointed out in a comment, the all directive should be removed. The only other significant change I recommend making to your code is adding & alignment points inside the aligned environment. (After all, why employ an algin environment if no alignment is performed?)

documentclass{article}

usepackage{amsmath} % for 'aligned' environment

begin{document}



begin{equation}

delta(x)equiv

left{

begin{aligned}

0,     quad&text{if $xne 0$}\

infty,quad&text{if $x=0$}

end{aligned}

right},,

qquadtext{with }

int_{-infty}^{+infty}! delta(x),dx=1.

end{equation}   

end{document}

share|improve this answer

answered 4 hours ago

MicoMico

288k32394782

add a comment | 

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4

You can use cases to simplify it a little bit and, of course, remove all as @siracusa said.

documentclass{article}

usepackage{amsmath}

begin{document}



begin{equation}

delta(x)equivleft.begin{cases}

0,      & text{if } x ne 0 \

infty, & text{if } x = 0 

end{cases}right}, quadtext{with } int_{-infty}^{+infty}delta(x); dx = 1.

end{equation}



end{document}

share|improve this answer

answered 5 hours ago

AboAmmarAboAmmar

34.8k32985

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Can you explain left. please? I am guessing it is somehow affecting the size of the opening curly bracket?
  
  – Anush
  21 mins ago
  

  
  
  
  

add a comment | 

4

You can use cases to simplify it a little bit and, of course, remove all as @siracusa said.

documentclass{article}

usepackage{amsmath}

begin{document}



begin{equation}

delta(x)equivleft.begin{cases}

0,      & text{if } x ne 0 \

infty, & text{if } x = 0 

end{cases}right}, quadtext{with } int_{-infty}^{+infty}delta(x); dx = 1.

end{equation}



end{document}

share|improve this answer

answered 5 hours ago

AboAmmarAboAmmar

34.8k32985

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Can you explain left. please? I am guessing it is somehow affecting the size of the opening curly bracket?
  
  – Anush
  21 mins ago
  

  
  
  
  

add a comment | 

You can use cases to simplify it a little bit and, of course, remove all as @siracusa said.

documentclass{article}

usepackage{amsmath}

begin{document}



begin{equation}

delta(x)equivleft.begin{cases}

0,      & text{if } x ne 0 \

infty, & text{if } x = 0 

end{cases}right}, quadtext{with } int_{-infty}^{+infty}delta(x); dx = 1.

end{equation}



end{document}

share|improve this answer

answered 5 hours ago

AboAmmarAboAmmar

34.8k32985

documentclass{article}

usepackage{amsmath}

begin{document}



begin{equation}

delta(x)equivleft.begin{cases}

0,      & text{if } x ne 0 \

infty, & text{if } x = 0 

end{cases}right}, quadtext{with } int_{-infty}^{+infty}delta(x); dx = 1.

end{equation}



end{document}

share|improve this answer

answered 5 hours ago

AboAmmarAboAmmar

34.8k32985

answered 5 hours ago

AboAmmarAboAmmar

34.8k32985

answered 5 hours ago

AboAmmarAboAmmar

34.8k32985

3

As @siracusa has already pointed out in a comment, the all directive should be removed. The only other significant change I recommend making to your code is adding & alignment points inside the aligned environment. (After all, why employ an algin environment if no alignment is performed?)

documentclass{article}

usepackage{amsmath} % for 'aligned' environment

begin{document}



begin{equation}

delta(x)equiv

left{

begin{aligned}

0,     quad&text{if $xne 0$}\

infty,quad&text{if $x=0$}

end{aligned}

right},,

qquadtext{with }

int_{-infty}^{+infty}! delta(x),dx=1.

end{equation}   

end{document}

share|improve this answer

answered 4 hours ago

MicoMico

288k32394782

add a comment | 

3

As @siracusa has already pointed out in a comment, the all directive should be removed. The only other significant change I recommend making to your code is adding & alignment points inside the aligned environment. (After all, why employ an algin environment if no alignment is performed?)

documentclass{article}

usepackage{amsmath} % for 'aligned' environment

begin{document}



begin{equation}

delta(x)equiv

left{

begin{aligned}

0,     quad&text{if $xne 0$}\

infty,quad&text{if $x=0$}

end{aligned}

right},,

qquadtext{with }

int_{-infty}^{+infty}! delta(x),dx=1.

end{equation}   

end{document}

share|improve this answer

answered 4 hours ago

MicoMico

288k32394782

add a comment | 

As @siracusa has already pointed out in a comment, the all directive should be removed. The only other significant change I recommend making to your code is adding & alignment points inside the aligned environment. (After all, why employ an algin environment if no alignment is performed?)

documentclass{article}

usepackage{amsmath} % for 'aligned' environment

begin{document}



begin{equation}

delta(x)equiv

left{

begin{aligned}

0,     quad&text{if $xne 0$}\

infty,quad&text{if $x=0$}

end{aligned}

right},,

qquadtext{with }

int_{-infty}^{+infty}! delta(x),dx=1.

end{equation}   

end{document}

share|improve this answer

answered 4 hours ago

MicoMico

288k32394782

documentclass{article}

usepackage{amsmath} % for 'aligned' environment

begin{document}



begin{equation}

delta(x)equiv

left{

begin{aligned}

0,     quad&text{if $xne 0$}\

infty,quad&text{if $x=0$}

end{aligned}

right},,

qquadtext{with }

int_{-infty}^{+infty}! delta(x),dx=1.

end{equation}   

end{document}

share|improve this answer

answered 4 hours ago

MicoMico

288k32394782

answered 4 hours ago

MicoMico

288k32394782

answered 4 hours ago

MicoMico

288k32394782