public void Constructor_Variable()
{
PolynomialTerm v = 'a';
(v == 0).AssertIsFalse();
v.IsConstant.AssertIsFalse();
v.PowerSum.AssertIsEqualTo(1u);
v.GreatestPowerIndeterminate.Variable.AssertIsEqualTo('a');
v.GreatestPowerIndeterminate.Power.AssertIsEqualTo(1);
v.ToString().AssertIsEqualTo("a");
('b' == v).AssertIsFalse();
v.DerivativeBy('a').Single().AssertIsEqualTo(1);
v.DerivativeBy('b').AssertIsEmpty();
(2 * v).AssertIsEqualTo(2 * Term.a);
(v / 2).AssertIsEqualTo(0.5 * Term.a);
v.GetOperation('a').Value(5).AssertIsEqualTo(5);
}
public void Constructor_PolynomialVariable()
{
PolynomialTerm v = 2.1 * Term.a * Term.c.ToPower(3);
(v == 0).AssertIsFalse();
v.IsConstant.AssertIsFalse();
v.ToString().AssertIsEqualTo("2.1ac³");
v.PowerSum.AssertIsEqualTo(4u);
v.GreatestPowerIndeterminate.Variable.AssertIsEqualTo('c');
v.GreatestPowerIndeterminate.Power.AssertIsEqualTo(3);
v.DerivativeBy('a').Single().AssertIsEqualTo(2.1 * Term.c.ToPower(3));
v.DerivativeBy('b').AssertIsEmpty();
v.DerivativeBy('c').Single().AssertIsEqualTo(6.3 * Term.c.ToPower(2) * Term.a.ToPower(1));
v.DerivativeBy('a').DerivativeBy('c').Single().AssertIsEqualTo(6.3 * Term.c.ToPower(2));
(-2 * v).AssertIsEqualTo(-4.2 * Term.a * Term.c.ToPower(3));
v.GetOperation('a', 'c').Value(5, 2).AssertIsEqualTo(2.1 * 5 * 8);
}
public void Constructor_Default()
{
PolynomialTerm v = default;
(v == 0).AssertIsTrue();
v.IsConstant.AssertIsTrue();
v.ToString().AssertIsEqualTo("0");
v.PowerSum.AssertIsEqualTo(0u);
v.GreatestPowerIndeterminate.Variable.AssertIsEqualTo((char)0);
v.GreatestPowerIndeterminate.Power.AssertIsEqualTo(0);
v.AssertIsEqualTo(0);
(1 == v).AssertIsFalse();
v.DerivativeBy('a').AssertIsEmpty();
(2 * v).AssertIsEqualTo(0);
(v / 2).AssertIsEqualTo(0);
v.GetOperation().Value().AssertIsEqualTo(0);
}
