Python cos Examples

Example #1

File: test_functions.py Project: MridulS/csympy

def test_sin():
    x = Symbol("x")
    e = sin(x)
    assert e == sin(x)
    assert e != cos(x)

    assert sin(x).diff(x) == cos(x)
    assert cos(x).diff(x) == -sin(x)

    e = sqrt(x).diff(x).diff(x)
    f = sin(e)
    g = f.diff(x).diff(x)
    assert isinstance(g, Add)

Example #2

def test_sin():
    x = Symbol("x")
    e = sin(x)
    assert e == sin(x)
    assert e != cos(x)

    assert sin(x).diff(x) == cos(x)
    assert cos(x).diff(x) == -sin(x)

    e = sqrt(x).diff(x).diff(x)
    f = sin(e)
    g = f.diff(x).diff(x)
    assert isinstance(g, Add)

Example #3

File: test_subs.py Project: MechCoder/csympy

def test_sin():
    x = Symbol("x")
    y = Symbol("y")
    e = sin(x)
    assert e.subs({x: y}) == sin(y)
    assert e.subs({x: y}) != sin(x)

    e = cos(x)
    assert e.subs({x: 0}) == 1
    assert e.subs(x, 0) == 1

Example #4

File: test_subs.py Project: stephanielingwood/csympy

def test_sin():
    x = Symbol("x")
    y = Symbol("y")
    e = sin(x)
    assert e.subs({x: y}) == sin(y)
    assert e.subs({x: y}) != sin(x)

    e = cos(x)
    assert e.subs({x: 0}) == 1
    assert e.subs(x, 0) == 1

Example #5

File: test_functions.py Project: pranav15197/csympy

def test_abs():
    x = Symbol("x")
    e = abs(x)
    assert e == abs(x)
    assert e != cos(x)

    assert abs(5) == 5
    assert abs(-5) == 5
    assert abs(Integer(5)/3) == Integer(5)/3
    assert abs(-Integer(5)/3) == Integer(5)/3
    assert abs(Integer(5)/3+x) != Integer(5)/3
    assert abs(Integer(5)/3+x) == abs(Integer(5)/3+x)

Example #6

File: test_functions.py Project: skylark01/csympy

def test_abs():
    x = Symbol("x")
    e = abs(x)
    assert e == abs(x)
    assert e != cos(x)

    assert abs(5) == 5
    assert abs(-5) == 5
    assert abs(Integer(5)/3) == Integer(5)/3
    assert abs(-Integer(5)/3) == Integer(5)/3
    assert abs(Integer(5)/3+x) != Integer(5)/3
    assert abs(Integer(5)/3+x) == abs(Integer(5)/3+x)

Example #7

def test_conv7b():
    x = sympy.Symbol("x")
    y = sympy.Symbol("y")
    assert sympify(sympy.sin(x / 3)) == sin(Symbol("x") / 3)
    assert sympify(sympy.sin(x / 3)) != cos(Symbol("x") / 3)
    assert sympify(sympy.cos(x / 3)) == cos(Symbol("x") / 3)

Example #8

def test_conv7():
    x = Symbol("x")
    y = Symbol("y")
    assert sin(x / 3)._sympy_() == sympy.sin(sympy.Symbol("x") / 3)
    assert sin(x / 3)._sympy_() != sympy.cos(sympy.Symbol("x") / 3)
    assert cos(x / 3)._sympy_() == sympy.cos(sympy.Symbol("x") / 3)

Example #9

File: test_subs.py Project: MechCoder/csympy

def test_args():
    x = Symbol("x")
    e = cos(x)
    f = e.subs(x, 0, 3)

Example #10

File: test_subs.py Project: stephanielingwood/csympy

def test_args():
    x = Symbol("x")
    e = cos(x)
    raises(TypeError, lambda: e.subs(x, 0, 3))

Example #11

File: test_eval.py Project: stephanielingwood/csympy

def test_eval_double2():
    x = Symbol("x")
    y = Symbol("y")
    e = sin(x)**2 + cos(x)**2
    raises(RuntimeError, lambda: (abs(eval_double(e) - 1) < 1e-9))

Example #12

def test_eval_double1():
    x = Symbol("x")
    y = Symbol("y")
    e = sin(x)**2 + cos(x)**2
    e = e.subs(x, 7)
    assert abs(eval_double(e) - 1) < 1e-9

Example #13

def test_eval_double2():
    x = Symbol("x")
    y = Symbol("y")
    e = sin(x)**2 + cos(x)**2
    assert abs(eval_double(e) - 1) < 1e-9

Example #14

def test_args():
    x = Symbol("x")
    e = cos(x)
    f = e.subs(x, 0, 3)

Example #15

File: test_sympy_conv.py Project: MridulS/csympy

def test_conv7():
    x = Symbol("x")
    y = Symbol("y")
    assert sin(x/3)._sympy_() == sympy.sin(sympy.Symbol("x") / 3)
    assert sin(x/3)._sympy_() != sympy.cos(sympy.Symbol("x") / 3)
    assert cos(x/3)._sympy_() == sympy.cos(sympy.Symbol("x") / 3)

Example #16

File: test_sympy_conv.py Project: MridulS/csympy

def test_conv7b():
    x = sympy.Symbol("x")
    y = sympy.Symbol("y")
    assert sympify(sympy.sin(x/3)) == sin(Symbol("x") / 3)
    assert sympify(sympy.sin(x/3)) != cos(Symbol("x") / 3)
    assert sympify(sympy.cos(x/3)) == cos(Symbol("x") / 3)

Example #17

File: test_eval.py Project: debugger22/symengine

def test_eval_double2():
    x = Symbol("x")
    y = Symbol("y")
    e = sin(x)**2 + cos(x)**2
    raises(RuntimeError, lambda: (abs(eval_double(e) - 1) < 1e-9))