Rubric: Mathematics

Why do you need a protractor

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A conveyor is a tool widely used inGeometry. At the same time, it is quite difficult to do without this tool as schoolchildren, who solve their first tasks, and engineers who perform complex geometric ...

Why we need probability theory

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Probability theory is a section of mathematicalScience, studying the patterns of random phenomena. The subject of studying the theory of probability is the investigation of the probability regularities of random (homogeneous) mass phenomena. The methods revealed in the theory ...

What are logarithms used for?

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What is the logarithm? The exact definition is: "The logarithm of the number A on the base C is the exponent to which the number C is to be raised in order to obtain the number A". AT…

The bisector of the triangle and its properties

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The triangle bisector has a number of properties. If you use them correctly, you can solve problems of different levels of complexity. But even if you have data on all three bisectors, you can not build a triangle.

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Thanks to the rapid introduction of informatizationIn the everyday life of man, even the slightest idea of ​​the basics of computer science and number systems has every schoolboy. But for many, the inscription in the computer ...

How to find the distance between two parallel lines

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Determination of the distance between two objects,Located in one or several planes, is one of the most common tasks in geometry. Guided by common methods, you can find the distance between ...

How to define the center of a circle

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A circle is a collection of points at an equal distance from one point, called the center. However, in those cases where you are given only one circle, finding its center can ...

How to find the area of ​​a triangle if the angle

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Knowledge of only one parameter (the magnitude of the angle) is notIt is sufficient to find the area of ​​the triangle. If there are any additional dimensions, then to determine the area you can choose one of the formulas, ...

How to split a shot into an entire: rule

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The fractionation into an integer is of practical importance. Let there be a large cake, which was cut into 12 pieces. Some of the cake was eaten and 7 pieces remained on the dish. AT…

How to calculate the cubic volume

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Cubic volume is a characteristic of the body, showing its ability to contain a certain number of cubes of a substance or gas. Counting the cubic volume is very easy.

How to multiply in the mind

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Multiplication is one of the four arithmetic operations studied from the first grade of the school. Along with the addition, it is probably most often used in everyday life. At the same time at hand ...

How to find a chord in a circle

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A chord is a segment of a straight line drawn inside a circle and joining two points on a circle. Chord does not pass through the center of the circle and this differs from the diameter.

How to determine the convergence of the series

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A number series is the sum of the terms of the infiniteSequence. Partial sums of the series are the sum of the first n terms of the series. The series will be convergent if the sequence of its partial sums converges.

How to find the interest rate

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In our time, a person very far from accounting and finance constantly has to deal with interest. When making a loan and deposits in the bank, when you receive a salary and all sorts of ...

How to deduct interest

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The percentage of the number is the hundredth part of this number, denoted by 1%. One hundred percent (100%) is equal to the number itself, and 10% of the number is equal to a tenth of this number. Under…

How to make a regular polyhedron

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A polyhedron whose every faceIs a regular polygon, i.e. A polygon with equal sides is called a regular polyhedron. In total, there are five regular polyhedra - a tetrahedron, an octahedron, an icosahedron, a hexahedron (cube) ...

How to plot the graph of a function

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If the graph of the derivative has clearly expressed signs, it is possible to make assumptions about the behavior of the antiderivative. When constructing the function graph, check the conclusions drawn on the characteristic points.

How to build a median using a compass

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A median is a segment drawn from some corner of the polygon to one of its sides in such a way that the point of intersection of the median and the side is the middle of this side.

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WHAT are relatively prime numbers

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Mutually prime numbers are a mathematical concept that should not be confused with numbers simple. The common between the two concepts is only that they both have a direct relationship ...

How to calculate the volume

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The world in which we live is trihedral. Hence all the bodies in nature are three-dimensional. Volume is a physical quantity that numerically shows the dimensions of a body, measured in cubic meters, centimeters and ...

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