Hello,
I try to calculate the tangent of a circle. This is a quite simple system
of equations (one is quadratic),
but sympy fails (empty solution set). Any idea why?
from __future__ import division
from sympy import *
from sympy.solvers import solve
init_printing(use_latex = True)
r, phi_0, phi_1, phi_2, beta_0, beta_1, beta_2= symbols('r phi_0, phi_1,
phi_2, \
beta_0, beta_1, beta_2')
if True:
if True:
phi_0 = 0
beta_0 = 0
phi_1 = 1.
beta_1 = 1.
r=1.
eq1 = Eq((phi_2 - phi_1) * (phi_2 - phi_1) + (beta_2 - beta_1) *
(beta_2 - beta_1) - r*r)
eq2 = Eq((phi_2 - phi_0) * (phi_2 - phi_1) + (beta_2 - beta_0) *
(beta_2 - beta_1))
result = solve([eq1, eq2], phi_2)
print result
The result is an empty list. Any idea, how to fix this?
Expected result: phi_2 = 1.
Any hints appreciated!
U. Fechner, TU Delft
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