complex conjugate of a variable

d3banjan
73 ●5 ●6 ●14

I attempted to construct the complex conjugate of a variable thus -

x = var('x')
f = x*conjugate(x)
f({x:2+2i})

this throws a SyntaxError, although the f({x:2}) case works perfectly.

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why isn't the markdown for code working?

d3banjan ( 13 years ago )

Missing linebreak. There seemed to be HTML tags interspersed in your post for some reason. Incidentally, you can click on the "010101" button to select and format code instead of doing a manual indent.

DSM ( 13 years ago )

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answered 13 years ago

DSM

5242 ●21 ●68 ●112

f({x:2+2i}) can never have worked: 2i isn't valid Sage. Either use *I or j, depending on where you want the result to live:

sage: 2+2i   
------------------------------------------------------------
   File "<ipython console>", line 1
     Integer(2)+2i
                 ^
SyntaxError: invalid syntax

sage: 2+2j
2.00000000000000 + 2.00000000000000*I
sage: parent(_)
Complex Field with 53 bits of precision
sage: 2+2*I    
2*I + 2
sage: parent(_)
Symbolic Ring

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Asked: 13 years ago

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Last updated: Apr 15 '12

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