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What the error in writing this equation by latex?

What is a good way to stack things in an equation?Can I have a mathematical equation within a caption?How to put dots in front equation numbers in amsmathWriting partial differential equation like u_t=u_xxCan't generate png with Error: Erroneous nesting of equation structuresUndefined control sequence while writing equationLatex missread the equation and provides an errorMissing } inserted beginequationHow can I align this equation in the center?Writing Equation in latex

3

begineqnarray*
f(lambda x+(1−lambda)y)leq lambda f(x)+(1−lambda)f(y)
endeqnarray*

What the error in writing this equation by latex?

the oregenal equation

equations

share|improve this question

edited 2 hours ago

David Carlisle

493k4111371885

asked 2 hours ago

H MH M

162

New contributor

H M is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

• 
  
  
  

  
  3
  

  
  
  
  
  
  

  
  
  please always post a complete small document that produces the error and show the error you got. eqnarray should have more than one row, and each row should have two & but not doing that does not generate an error, just bad output.
  
  – David Carlisle
  2 hours ago
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  @Mico... Actually for Greeks the typo is inside lambda and not the opposite... So, it is a bug in the name... But you are right.
  
  – koleygr
  2 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Mico also it's a typo added since I posted my answer, otherwise the error I showed would be different, I'll revert :(
  
  – David Carlisle
  2 hours ago
  

  
  
  
  

add a comment | 

3

begineqnarray*
f(lambda x+(1−lambda)y)leq lambda f(x)+(1−lambda)f(y)
endeqnarray*

What the error in writing this equation by latex?

the oregenal equation

equations

share|improve this question

edited 2 hours ago

David Carlisle

493k4111371885

asked 2 hours ago

H MH M

162

New contributor

H M is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

• 
  
  
  

  
  3
  

  
  
  
  
  
  

  
  
  please always post a complete small document that produces the error and show the error you got. eqnarray should have more than one row, and each row should have two & but not doing that does not generate an error, just bad output.
  
  – David Carlisle
  2 hours ago
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  @Mico... Actually for Greeks the typo is inside lambda and not the opposite... So, it is a bug in the name... But you are right.
  
  – koleygr
  2 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Mico also it's a typo added since I posted my answer, otherwise the error I showed would be different, I'll revert :(
  
  – David Carlisle
  2 hours ago
  

  
  
  
  

add a comment | 

begineqnarray*
f(lambda x+(1−lambda)y)leq lambda f(x)+(1−lambda)f(y)
endeqnarray*

What the error in writing this equation by latex?

the oregenal equation

equations

share|improve this question

edited 2 hours ago

David Carlisle

493k4111371885

asked 2 hours ago

H MH M

162

New contributor

H M is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

begineqnarray*
f(lambda x+(1−lambda)y)leq lambda f(x)+(1−lambda)f(y)
endeqnarray*

share|improve this question

edited 2 hours ago

David Carlisle

493k4111371885

asked 2 hours ago

H MH M

162

New contributor

H M is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

share|improve this question

edited 2 hours ago

David Carlisle

493k4111371885

asked 2 hours ago

H MH M

162

New contributor

H M is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

edited 2 hours ago

David Carlisle

493k4111371885

edited 2 hours ago

David Carlisle

493k4111371885

asked 2 hours ago

H MH M

162

New contributor

H M is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked 2 hours ago

H MH M

162

1 Answer
1

active

oldest

votes

4

documentclassarticle

begindocument
begineqnarray*
f(q x+(1−lambda)y)leq lambda f(x)+(1−lambda)f(y)
endeqnarray*
enddocument

produces the error

! Package inputenc Error: Unicode character − (U+2212)
(inputenc) not set up for use with LaTeX.

See the inputenc package documentation for explanation.
Type H <return> for immediate help.
 ... 

l.5 f(q x+(1−
 lambda)y)leq lambda f(x)+(1−lambda)f(y)
?

use an ascii minus sign - not −

Also you should use [...] not eqnarray* for a single line equation with no alignment points.

share|improve this answer

answered 2 hours ago

David CarlisleDavid Carlisle

493k4111371885

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  thanks a lot it run with me ...............................................................................................................thanks
  
  – H M
  2 hours ago
  

  
  
  
  

add a comment | 

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4

documentclassarticle

begindocument
begineqnarray*
f(q x+(1−lambda)y)leq lambda f(x)+(1−lambda)f(y)
endeqnarray*
enddocument

produces the error

! Package inputenc Error: Unicode character − (U+2212)
(inputenc) not set up for use with LaTeX.

See the inputenc package documentation for explanation.
Type H <return> for immediate help.
 ... 

l.5 f(q x+(1−
 lambda)y)leq lambda f(x)+(1−lambda)f(y)
?

use an ascii minus sign - not −

Also you should use [...] not eqnarray* for a single line equation with no alignment points.

share|improve this answer

answered 2 hours ago

David CarlisleDavid Carlisle

493k4111371885

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  thanks a lot it run with me ...............................................................................................................thanks
  
  – H M
  2 hours ago
  

  
  
  
  

add a comment | 

4

documentclassarticle

begindocument
begineqnarray*
f(q x+(1−lambda)y)leq lambda f(x)+(1−lambda)f(y)
endeqnarray*
enddocument

produces the error

! Package inputenc Error: Unicode character − (U+2212)
(inputenc) not set up for use with LaTeX.

See the inputenc package documentation for explanation.
Type H <return> for immediate help.
 ... 

l.5 f(q x+(1−
 lambda)y)leq lambda f(x)+(1−lambda)f(y)
?

use an ascii minus sign - not −

Also you should use [...] not eqnarray* for a single line equation with no alignment points.

share|improve this answer

answered 2 hours ago

David CarlisleDavid Carlisle

493k4111371885

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  thanks a lot it run with me ...............................................................................................................thanks
  
  – H M
  2 hours ago
  

  
  
  
  

add a comment | 

documentclassarticle

begindocument
begineqnarray*
f(q x+(1−lambda)y)leq lambda f(x)+(1−lambda)f(y)
endeqnarray*
enddocument

produces the error

! Package inputenc Error: Unicode character − (U+2212)
(inputenc) not set up for use with LaTeX.

See the inputenc package documentation for explanation.
Type H <return> for immediate help.
 ... 

l.5 f(q x+(1−
 lambda)y)leq lambda f(x)+(1−lambda)f(y)
?

use an ascii minus sign - not −

Also you should use [...] not eqnarray* for a single line equation with no alignment points.

share|improve this answer

answered 2 hours ago

David CarlisleDavid Carlisle

493k4111371885

documentclassarticle

begindocument
begineqnarray*
f(q x+(1−lambda)y)leq lambda f(x)+(1−lambda)f(y)
endeqnarray*
enddocument

! Package inputenc Error: Unicode character − (U+2212)
(inputenc) not set up for use with LaTeX.

See the inputenc package documentation for explanation.
Type H <return> for immediate help.
 ... 

l.5 f(q x+(1−
 lambda)y)leq lambda f(x)+(1−lambda)f(y)
?

share|improve this answer

answered 2 hours ago

David CarlisleDavid Carlisle

493k4111371885

answered 2 hours ago

David CarlisleDavid Carlisle

493k4111371885

answered 2 hours ago

David CarlisleDavid Carlisle

493k4111371885