Hi, I'm new to Sage and have the following question:
After solving an equation, Sage gives me two possible solutions:
sage: solve((vMax-v0) == (DeltaV11+DeltaV13), aMax)
[aMax == -sqrt(1/2a0^2 - j(v0 + j(vMax), aMax = sqrt(1/2a0^2 - j(v0 + j(vMax)]
For the further calculations, I have to use the second one. How can I do that?
Thank you for your help!
It's a Python list:
sage: sol=solve(x^2==1,x)
sage: sol
[x == -1, x == 1]
sage: sol[0]
x == -1
sage: sol[1]
x == 1
solve returns a list of equations (or a list of lists of equations)
Assign to a name (for example sol)
sol = solve(x^2 == 4 , x)
sol
[x == -2, x == 2]
Access to the equations in the list
First, second, last:
sol[0] ; sol[1] ; sol[-1]
x == -2
x == 2
x == 2
Access to the right hand side of the second equation:
sol[1].rhs()
Asked: 2014-09-10 15:40:28 +0100
Seen: 269 times
Last updated: Sep 10 '14
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