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Is there a command in xcas programming to test if a variable contains an array or a single value? I would like to write functions that can operate on a single equation or multiple equations in an array. For example:

function(z=x+y)
or
function([z=x+y,z=3*x+4*y])

I would like to be able to determine inside the function whether there is one equation or an array of equations.

Thank you
Matt

Hi,
perhaps you can use type command. If the argument for your function is arg, then type(arg) should return the integer 7 (meaning 'vector') only when arg is a vector. Hence you can use the following conditional switch:

Thank you very much.

Matt