Works For Me (TM):
sage: (3*e+2*I)*(-3+pi*I)
(I*pi - 3)*(3*e + 2*I)
sage: ((3*e+2*I)*(-3+pi*I)).n()
-30.7477217633110 + 19.6192026680207*I
What are you using (Sage version, interface, etc..) ?
so is -30.7477217633110 + 19.6192026680207I , the correct answer? Because I don't think there is another way to type (3e+2I)(-3+pi*I)
If you enter
sage: (3*e+2*I)*(-3+pi*I)
Sage will return:
(I*pi - 3)*(3*e + 2*I)
What did you type to get the answer -30.74772176 + 19.61920267*I ?
Asked: 2019-09-02 19:07:52 +0100
Seen: 750 times
Last updated: Sep 02 '19
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Is it homework ?
Is it possible you redefined
eandpi? Because if you did something likee = 2.718281828; pi = 3.141592654before computing the result, because then yes you'll get a numerical answer (and it would be a silly thing to do becauseeandpiare already built into Sage and can be given to high precision (e.g.pi.n(digits=100) => 3.141592653589793238462643383279502884197169399375105820974944592307816406286208998628034825342117068)`