An array in a equation with curly braces in both sides












2















I am trying to generate the following equation:
enter image description here



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


















  • 1





    After removing the all in the second line, your code seems to produce the desired result

    – siracusa
    3 hours ago
















2















I am trying to generate the following equation:
enter image description here



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


















  • 1





    After removing the all in the second line, your code seems to produce the desired result

    – siracusa
    3 hours ago














2












2








2








I am trying to generate the following equation:
enter image description here



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














I am trying to generate the following equation:
enter image description here



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




equations align arrays






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked 4 hours ago









Saeid Saeid

1404




1404








  • 1





    After removing the all in the second line, your code seems to produce the desired result

    – siracusa
    3 hours ago














  • 1





    After removing the all in the second line, your code seems to produce the desired result

    – siracusa
    3 hours ago








1




1





After removing the all in the second line, your code seems to produce the desired result

– siracusa
3 hours ago





After removing the all in the second line, your code seems to produce the desired result

– siracusa
3 hours ago










2 Answers
2






active

oldest

votes


















2














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}


enter image description here






share|improve this answer































    1














    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?)



    enter image description here



    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
























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      2 Answers
      2






      active

      oldest

      votes








      2 Answers
      2






      active

      oldest

      votes









      active

      oldest

      votes






      active

      oldest

      votes









      2














      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}


      enter image description here






      share|improve this answer




























        2














        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}


        enter image description here






        share|improve this answer


























          2












          2








          2







          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}


          enter image description here






          share|improve this answer













          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}


          enter image description here







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered 3 hours ago









          AboAmmarAboAmmar

          34.8k32985




          34.8k32985























              1














              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?)



              enter image description here



              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




























                1














                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?)



                enter image description here



                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


























                  1












                  1








                  1







                  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?)



                  enter image description here



                  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













                  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?)



                  enter image description here



                  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












                  share|improve this answer



                  share|improve this answer










                  answered 2 hours ago









                  MicoMico

                  288k32394782




                  288k32394782






























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