Want this question answered?
Among other things, complex numbers play an important role:* In electrical circuits - quantities in AC circuits are described by complex numbers. * In quantum mechanics - the "probability amplitude" is an important concept in quantum mechanics, and it is described by a complex number. * In art - for example, the Mandelbrot set is based on calculations with complex numbers.
The number -4 belongs to the set of all integers. It also belongs to the rationals, reals, complex numbers.
The answer will depend on what you mean by number: integers, rationals, reals, complex numbers, etc.
It is a non-integer. It can be a rational fraction (in decimal or rational form); it can be an irrational number (including transcendental numbers); it could be a complex number or a quaternion.
The Abelian or commutative property of addition of integers, rationals, reals or complex numbers.
Integers, rationals, reals, complex numbers, etc.
Among other things, complex numbers play an important role:* In electrical circuits - quantities in AC circuits are described by complex numbers. * In quantum mechanics - the "probability amplitude" is an important concept in quantum mechanics, and it is described by a complex number. * In art - for example, the Mandelbrot set is based on calculations with complex numbers.
-28 belongs to: Integers, which is a subset of rationals, which is a subset of reals, which is a subset of complex numbers.
The number -4 belongs to the set of all integers. It also belongs to the rationals, reals, complex numbers.
The answer will depend on what you mean by number: integers, rationals, reals, complex numbers, etc.
Quaternions, which are an extension of complex numbers into 4 dimensions. See related link.
It is a non-integer. It can be a rational fraction (in decimal or rational form); it can be an irrational number (including transcendental numbers); it could be a complex number or a quaternion.
The Abelian or commutative property of addition of integers, rationals, reals or complex numbers.
Any domain that you like. It can be the counting numbers, integers, rationals, reals or complex numbers. Or it can be a subset of any of them. For example, the domain could be {-2, 7, 3.56}.
No. Fractions do not include irrational numbers. And although there are an infinite number of both rationals and irrationals, there are far more irrational numbers than rationals.
The number of rationals is Aleph-null.
Venlo Mac Van