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area of a hexagon

Area of a Hexagon: Formulas and Solved Examples

03/02/2026 Rostyslav Vereshchak Area and Perimeter

Geometry has always been one of the fundamental branches of mathematics. It studies different shapes and their properties. Among many

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inverse of a matrix using characteristic polynomial

Inverse of a Matrix Using the Coefficients of the Characteristic Polynomial: From Idea to a Working Formula

02/02/2026 Rostyslav Vereshchak Fundamentals of Matrix Algebra

Inverse of a matrix is often associated with computing a determinant, working with minors, or performing row operations. But is

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perimeter of a hexagon

Perimeter of a Hexagon: Calculation and Practical Uses

26/01/2026 Rostyslav Vereshchak Area and Perimeter

Geometry helps us not only study shapes on paper, but also understand the world around us — from ornaments and

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derivative of arccot

Derivative of Arccot: Formula, Proof, Examples — Step by Step

18/01/2026 Rostyslav Vereshchak Derivative and Differential

The derivative of arccot is a natural next step when you study inverse trigonometric functions and want not only to

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inverse of a matrix by adjoint method

Inverse of a Matrix by the Adjoint Method: Getting Ready for Problems — Step by Step

17/01/2026 Rostyslav Vereshchak Fundamentals of Matrix Algebra

Inverse of a matrix becomes important when we multiply by a matrix \( A \) and then want to perform

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diagonals of a hexagon

Diagonals of a Hexagon: Explanation, Properties, and Examples

12/01/2026 Rostyslav Vereshchak Polygons

Geometry is one of the most fundamental branches of mathematics. It studies the properties of shapes and the relationships between

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inverse of a matrix using gauss jordan method

Inverse of a Matrix Using the Gauss–Jordan Method: From Idea to a Clear Algorithm

05/01/2026 Rostyslav Vereshchak Fundamentals of Matrix Algebra

The inverse of a matrix is a tool that lets you “undo” multiplication by a matrix and recover the original

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apothem of a hexagon

Apothem of a Hexagon: Formulas and Illustrations

28/12/2025 Rostyslav Vereshchak Polygons

The apothem of a hexagon is the length of the segment that connects the center of the hexagon to the

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inverse of a matrix

Inverse of a Matrix: From Definition to Practical Examples, Step by Step

27/12/2025 Rostyslav Vereshchak Fundamentals of Matrix Algebra

The inverse of a matrix is a concept that appears when we want to do with matrices something similar to

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hexagon

Hexagon in Detail: Definition, Types, and Key Properties

21/12/2025 Rostyslav Vereshchak Polygons

A hexagon is a polygon that has six sides and six interior angles. The sum of the interior angles of

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Numerical Methods

  • Eigenvalues and Eigenvectors
  • Finding Maximum and Minimum Values of a Function
  • Function Approximation Methods
  • Fundamentals of Matrix Algebra
  • Numerical Integration and Differentiation
  • Numerical Methods for Solving Single-Variable Equations
  • Solving Ordinary Differential Equations
  • Solving Systems of Linear Equations

Geometry

  • Area and Perimeter
  • Circle
  • Polygons
  • Solid Geometric Shapes
  • Surface Area and Volume of Geometric Shapes
  • Triangles

Mathematics

  • Derivative and Differential
  • Fractions
  • Function Research
  • Integral Calculus
  • Logarithmic equations
  • Quadratic equations

Python Programming Language

  • Basic Syntax
  • Conditional Statements
  • Introduction to Python
  • Loops

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