hi i'm new in sage , I have two vectors
v1=vector([8,-10,12])
v2=vector([9,4,-6])
i want to create a third one which is parallel with v1 and also the scalar product of v2 and v3 is equal to 1440
(x,y,z)=var('x,y,z')
v3=vector([x,y,z])
solve([v1.dot_product(v3)==1440,v2.cross_product(v3)==0],x,y,z)
i want to get something like this: [x= , y= , z= ]
but the result: []
Vectors with symbolic entries are not themselves "symbolic", so you can't put them in places where symbolic equations are expected:
sage: v2.cross_product(v3)==0
False
You can work around that, though:
sage: solve(v2.cross_product(v3).list() + [v1.dot_product(v3)==1440],x,y,z)
[[x == -324, y == -144, z == 216]]
Asked: 2015-03-16 03:15:30 +0100
Seen: 390 times
Last updated: Mar 16 '15
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