hello everyone
I can't make solve() do what I want.
Look at this:
sage> (2+I)*(1+7*I)
15I-5
sage> (2+I)*(1-7*I)
-13I+9
sage>solve([a*b==15*I-5,a*conjugate(b)==-13*I+9],[a,b])
[]
So, from the first two lines I know that a=2+I, b=1+7I should
be a solution to the system in the third, yet solve(
Sage will not solve this system of equations:
x^2 + y^2 == 25
x^2 - y^2 - y == 5 (-y^2)
{{{
sage: var('x y')
sage: solve( [x^2 + y^2 == 25, x^2 - y^2 - y == 5], x,y )
[]
}}}
Yet, save will solve this system of equations:
x^2 + y^2 == 25
x^2 + y^2 - y == 5 (+y^2)
{{{
sage: so
Can someone please tell me why it is impossible to solve the following
system of boolean equations in SAGE:
sage: N=144
sage: P = BooleanPolynomialRing(N,'x',order='lex')
sage: t = []
sage: for i in range(0,N):
t.append(var(P.gen(i)))
sage: print "t",t
t [x0, x1, x2, x3, x4, x5, x6, x7, x8,
