Thursday, July 29, 2010

Multiply matrices



Let us try and learn about the matrices calculator,the matrices multiplication calculator need two input matrices minimum and it produce the result in one matrix. If we have to multiply two 3 x 3 matrices we have totally 18 elements(each 3 x 3 matrix have 9 elements, three elements in each row) to multiply but we have only 9 elements in the resulted matrix.. The inverse matrix method are formed on the basis like X=A-1B which is formed for finding the matrix X with the equation AX = B It is used in solving the linear system of equations. Here A-1 is the inverse matrix representation.
I hope the above explanation was useful.Hope you like the above example of Matrices calculator.Please leave your comments, if you have any doubts

Surface area to volume ratio



Surface area to volume ratio:The surface area to volume ratio also called the surface-to-volume ratio and variously denoted sa/vol or SA:V, is the amount of surface area per unit volume of an object or collection of objects. The surface area to volume ratio is measured in units of inverse distance. A cube with sides of length a will have a surface area of 6a2 and a volume of a3.In the blogs to come we can also learn about few interesting topics like decimal calculator,about triangles and ratios and many more.Hope you like this example of Surface area to volume ratio,if you have any doubts or comments please leave it here.

How to find domain and range


How to find domain and range:Let us learn about domain and range,To be more precise let us learn about How to find domain and range.The domain function is the full of the possible values of the independent variable in the function,now let us learn about Range-The range function is the full of all the possible resulting values of the dependent variable of the function, after we have substituted the values in the domain function.The range of a function is the possible y values of a function that result when we substitute all the possible x-values into the function.When finding the range,we have to remember the below things:To Substitute different x-values in the expression for y to see the what is happening.Make sure you look for minimum and maximum values of y.In the blogs to come we will learn about binomial probability distribution,this is a very vast topic and we will cover this in the blogs to come. I hope the above explanation was useful. Hope you like the above example of How to find domain and range
Please leave your comments, if you have any doubts

Triangles types


Triangles Types:Let us now see what we mean by Triangles types, There are many types of triangle.The types of the triangle are:
  • Type 1: Isosceles Triangle.
  • Type 2: Right Triangle.
  • Type 3: Scalene Triangle.
  • Type 4: Obtuse Triangle.
  • Type 5: Equilateral triangle.
  • Type 6: Acute Triangle.Now we will look at one of these triangles in detail, let us look at isosceles Right triangle for example,this is one of the type of triangle which is classified on the basis of sides. This triangle contains two of its sides in equal length. I hope the above explanation was useful. Hope you like the above example of Triangles Types.Please leave your comments, if you have any doubts

Monday, July 26, 2010

Explain Front end estimation



Let us study front end estimation in math,

Front end estimation typically produces an earlier estimation of addition or difference than the answer formed through adding or subtracting rounded numbers.


In front end estimation math, one takes the two maximum digits of a number, and then put zeros on the other position values. This is supposed to create an earlier estimate than rounding and then addition numbers. In this article we shall discuss about the front end estimation math.


I hope the above explanation was useful,
now let me explain 8th grade math problems

Friday, July 23, 2010

How to factor complex polynomials


Let us study how to factor complex polynomials,

Introduction to factoring complex polynomials:

In mathematics, a rational function is any function which can be written as the ratio of two polynomial functions. Factorization (also factorisation in British English) or factoring is the decomposition of an object (for example, a number, a polynomial, or a matrix) into a product of other objects, or factors, which when multiplied together give the original.

Complex number can be written as, (a + ib). For factoring the complex polynomial we use the formula.

Formula:



Here, a is co-efficient os x2,, b is co-efficient of x and c is constant.

I hope the above explanation was useful.

Thursday, July 22, 2010

What is Deductive reasoning



Let us study about Deductive reasoning definition,

Deductive reasoning refers to the process of closing that something should be true because it is a special case of a general principle that is known to be true.

Deductive reasoning is logically valid and it is the basic method in which mathematical facts are showing to be true. A deductive argument to be in view of sound the argument is obliged to not only be valid, but the premises should be true as well.

It is also called Deductive logic, is reasoning which assess deductive arguments.

I hope the above explanation was useful, now let us study about algebra 2 formulas.

Monday, July 19, 2010

Euclid: Father of Geometry


Who is called The Father of Geometry ?

Perhaps one of the most difficult things about studying great men of the past is the lack of available information on many of them. Facts about one of our greatest mathematicians are shrouded in mystery. There is so much mystery around him that some people think he did not really exist. Who is this mystery math man? He was Euclid of Alexandria.

Euclid is thought to be a Greek man who lived while Ptolemy I reigned in Egypt (323 BC- 283 BC). He worked in the Library of Alexandria. It was considered to be the greatest library in the world at the time.
Some people believe that there was a team of mathematicians working in Alexandria. As the leader of the team, Euclid could have been given the credit for all of the work. However, no records exist to prove or disprove this idea.

I hope the above explanation was useful, now let me explain Geometry symbols.

Friday, July 16, 2010

Explain Linear Function Concepts


Let us study about Linear Functions,

Introduction to Linear Functions:

A polynomial functions of single degree is defined as a linear functions. It relates a dependent variable with an independent variable in a simple way. Mathematical equation in which there is no independent-variable is raised to a power greater than one. A simple linear function with one independent variable (y=a+bx) traces a straight line when plotted on a graph. It is also called as linear equation.
Forms of Linear Functions:

The function is defined by f the first degree equation:

f = { ( X, Y)/ Y = mX + b }

where m and b are constants, x and y is called a linear functions. The function derives a straight line while graphing.

Functions such as these gives graph that are straight lines, and, thus, the name linear. There are three main forms in linear functions. They are as follows,

1. Slope-Intercept Form is given by y = mx +b.
2. Point Slope Form is given by m = (y - y1) / ( x – x1).
3. General Form is given by Ax + By + C = 0.

I hope the above explanation was useful, now let me explain about Radicals.

Thursday, July 15, 2010

Square Roots


Square Roots:Square root method is derived from the process of long-hand division. The symbolic representation of the term square root is [sqrt(x)] .Square root is a constant number. Square root is not a fractional number. The multiplication of a given number is said to be square root of that number. We also find square root for the imaginary values. The imaginary values in square root are represented as ‘i’. For example square root of -1 is ‘i’.

Solving square root inequalities involves the process of solving square root equation with inequalities in detail. The square root can be easily solved by performing squaring operation for the given equation. The comparison process is carried out with the help of inequality sign.Hope you like the above example of Square Roots.Please leave your comments, if you have any doubts.

Slope


Slope of a Line:
The slope of a line is defined as the tangent of the angle made by the line with the x-axis in the positive direction (anti-clockwise).
The lines are said to be intersecting lines only when one line intersect with the other line. These lines are also said to be perpendicular to each other but it is not mandatory that it should be perpendicular .
It can also be said that all the perpendicular lines are intersecting lines but not all intersecting lines are perpendicular lines . The lines that are parallel to each other are not intersecting lines.
Hope you like the above example of Lines.Please leave your comments, if you have any doubts.

Wednesday, July 14, 2010

Explain intersecting circles


Let us study about intersecting circles,
The following formula for using finding a intersection point on a circle.

The line intersects circle can be defined as,

Y – Y1 = m(x-x1)

Y=m(x-x1) + y1

R2 = (x-h) 2 + (y-k) 2

R = [sqrt((x-h) 2 + (y-k) 2)]

The r is a intersection point of a line.

Here, the x and y are the co ordinates of the point of an intersection.

The x1 and y1 are the co ordinates of appoint on the line

The h and k are the translation between the center of the circle and also the origin of the coordinate system in the x and y directions respectively.

Monday, July 12, 2010

Angle and Angle Pairs


Angles and Angle Pairs :

Easily as significant as rays and line segments are the angles they form. Without them, there would be none of the geometric figures that you know (with the possible exception of the circle).


Angles

Two rays that have the same endpoint form an angle. That endpoint is called the vertex, and the rays are called the sides of the angle. In geometry, an angle is measured in degrees
from 0° to 180°. The number of degrees indicates the size of the angle. In Figure 1 , rays AB and AC form the angle. A is the vertex. and are the sides of the angle.

Figure 1

∠BAC.
I hope the above explanation was helpful.

Thursday, July 8, 2010

Central Limit Theorem


Let us learn about Central Limit Theorem,
If the population of all subscribers to the magazine were normal, you would expect its sampling distribution of means to be normal as well. But what if the population were non-normal? The Central Limit Theorem states that even if a population distribution is strongly non-normal, its sampling distribution of means will be approximately normal for large sample sizes (over 30). The Central Limit Theorem makes it possible to use probabilities associated with the normal curve to answer questions about the means of sufficiently large samples.

According to the Central Limit Theorem, the mean of a sampling distribution of means is an unbiased estimator of the population mean.
Similarly, the standard deviation of a sampling distribution of means is
Note that the larger the sample, the less variable the sample mean. The mean of many observations is less variable than the mean of few. The standard deviation of a sampling distribution of means is often called the standard error of the mean. Every statistic has a standard error, which is a measure of the statistic's random variability.
I hope the above explanation was useful.