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Statement of fundamental theorem of algebra

The fundamental theorem of algebra states that every non-constant polynomial with complex coefficients has at least one complex root. In other words, if P(x) is a polynomial of degree n with complex coefficients, then there exists a complex number z such that P(z) = 0. Furthermore, this polynomial can be factored into linear factors with…

Geometric interpretations

Algebraic concepts can often be represented and understood through geometric interpretations. Here are a few examples: These are just a few examples of how algebra and geometry are interconnected. By understanding the geometric interpretations of algebraic concepts, we can gain deeper insights into their properties and applications. What is Required Geometric interpretations The requirements for…

Cube roots of unity

The cube roots of unity are the complex numbers that satisfy the equation z^3 = 1. We can find the cube roots of unity by solving this equation: z^3 = 1 Taking the cube root of both sides, we get: z = 1^(1/3) Using the polar form of a complex number, we can write: 1…

Triangle inequality

The triangle inequality is a fundamental property of algebraic operations on real numbers. It states that for any three real numbers a, b, and c, the sum of the lengths of any two sides of a triangle is greater than or equal to the length of the remaining side. Symbolically, the triangle inequality can be…

Properties of modulus and principal argument

The modulus and principal argument are two important properties of complex numbers. Here’s a brief explanation of each: Modulus: The modulus of a complex number z is defined as the distance between the origin and the point representing z in the complex plane. It is denoted by |z|. The modulus of a complex number can…

Polar representation

In algebra, polar representation refers to the representation of complex numbers in terms of their magnitude and angle. A complex number can be represented in polar form as: z = r(cosθ + i sinθ) where z is the complex number, r is its magnitude (or modulus), and θ is its angle (or argument). The angle…

Conjugation

Algebra conjugation is a mathematical operation that involves changing the sign of the imaginary part of a complex number. A complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is the imaginary unit (i.e., i^2 = -1). The conjugate of…

Multiplication

Algebra multiplication involves multiplying variables and/or constants together. The general format for algebra multiplication is: a * b where “a” and “b” can be any combination of numbers or variables. For example: 2 * 3 = 6 x * y = xy When multiplying variables together, we can use the rules of exponents to simplify…

Addition

Algebra addition refers to the mathematical operation of combining two or more numbers or variables to get a sum. In algebra, addition is usually denoted by the plus sign (+). For example, if we have two variables, x and y, we can add them together using the expression “x + y”. The addition of numbers…

Algebra of complex numbers

Complex numbers are numbers of the form a + bi, where a and b are real numbers and i is the imaginary unit, which is defined as i^2 = -1. The algebraic operations on complex numbers are similar to those of real numbers. We can add, subtract, multiply and divide complex numbers. Addition: To add…