OpenersNotesSection(Spacer1)Details

This message is generated when the same name is used to specify two variables that are required to be distinct.

(RefLink[Off, paclet:ref/Off])[message] switches off the message; (RefLink[On, paclet:ref/On])[message] switches it on. For example: (RefLink[Off, paclet:ref/Off])[General::dupv].

OpenersPrimaryExamplesSection(Spacer1)Examples  (2)

OpenersExampleSection0(Spacer1)Basic Examples  (2)

The same symbol is used in both of the range specifications in this input to (RefLink[NDSolve, paclet:ref/NDSolve]):

NDSolve[{Derivative[2,0][f][x,t]==Derivative[0,1][f][x,t],f[0,t]==0,f[1,t]==1,f[x,0]==x^2},f,{x,0,1},{x,0,1}]

This shows valid input to (RefLink[NDSolve, paclet:ref/NDSolve]):

NDSolve[{Derivative[2,0][f][x,t]==Derivative[0,1][f][x,t],f[0,t]==0,f[1,t]==1,f[x,0]==x^2},f,{x,0,1},{t,0,1}]

The same symbol is used for both variables of integration:

NIntegrate[x y,{x,0,1},{x,0,1}]

This shows valid variable specifications in (RefLink[NIntegrate, paclet:ref/NIntegrate]):

NIntegrate[x y,{x,0,1},{y,0,1}]

({{DocumentationFooterIconsRelatedFunction.png, ({{See Also}, {(RefLink[General, paclet:ref/General])}})}})