def test_derivatives_numeric(self):
print "\n\n\n" + " Test if Derivatives Work Numerically ".center(75, "#")
from sympy import symbols, Derivative
x, y, z = symbols('x,y,z')
test_expr = Derivative(y, x) + Derivative(z, x)
target_expr = Derivative(z, x) + Derivative(y, x)
print "Target expression: '%s'" % target_expr
print "Test expression: '%s'" % test_expr
equal = api.numeric_equality(test_expr, target_expr)
self.assertTrue(equal, "Expected expressions to be found numerically equal!")
print " PASS ".center(75, "#")
def test_main_trig_functions_numeric(self):
print "\n\n\n" + " Test if sin, cos and tan and inverses Work Numerically ".center(75, "#")
from sympy import symbols, sin, cos, tan, asin, acos, atan
x, y = symbols('x,y')
test_expr = sin(x) + cos(x) + tan(x) + asin(y) + acos(y) + atan(y)
target_expr = sin(x) + cos(x) + tan(x) + asin(y) + acos(y) + atan(y)
print "Target expression: '%s'" % target_expr
print "Test expression: '%s'" % test_expr
equal = api.numeric_equality(test_expr, target_expr)
self.assertTrue(equal, "Expected expressions to be found numerically equal!")
print " PASS ".center(75, "#")
