I want to solve a relativity problem using SOLVE.
I used to be able to, but now I run into a problem.
lp=60e9*1000
dtp=1.25*24*3600
beta=var('beta')
gamma=1/(sqrt(1-beta^2))
solve(dtp*gamma==lp/(beta*c),beta)
the result I expect is a numerical value, but I get the following:
[beta == 733841/39600
Hello, i was working with real functions in real coefficients. I was
doing some test to be sure it was all always real (without imaginary
part), and i ask Sage to solve this:
var('x',domain=RR);
solve([imag(x)==0,imag(sqrt(-x^2-1))==0],x);
and it answered me:
[[x == -I], [x == I]]
I would under
achrzesz wrote :
SAGE:
sage: s=solve(3*x^3-9*x+10==0,x,solution_dict=True)
sage: [n(t[x]) for t in s]
[1.06780542232902 - 1.84949324407141*I,
0.0277635108030695 + 1.24902476648341*I,
-1.09556893313209 + 0.600468477588001*I]
# WRONG!
sage: s=solve(3*x^3-9*x+10==0,x,
solution_dict=True,to_poly_
SAGE:
sage: s=solve(3*x^3-9*x+10==0,x,solution_dict=True)
sage: [n(t[x]) for t in s]
[1.06780542232902 - 1.84949324407141*I,
0.0277635108030695 + 1.24902476648341*I,
-1.09556893313209 + 0.600468477588001*I]
# WRONG!
sage: s=solve(3*x^3-9*x+10==0,x,
solution_dict=True,to_poly_solve='force')
sage
Hello, list, i am solving the simple system of the equations:
#
var("pa,pb,costheta,Ea,Eb,ma,mb,mc")
solve([pa*pb*costheta==(-ma^2-mb^2+mc^2)/2 + Ea*Eb, pa==sqrt(Ea^2-
ma^2), pb==sqrt(Eb^2-mb^2)],pa,pb,Eb)
#
Sage replies:
#
TypeError: unable to make sense of Maxima expression
#
what is wrong?
--
Hi,
I have a set of variables which I defined in an array and I'm trying
to use "solve" to solve for these variables, but I get the following error:
x = []
N = 3
for i in range(N):
string = 'x' + str(i)
temp_var = var(string)
x.append(temp_var)
Eqn = []
Eqn.append(x[0] + x[1] +
