Graphing Calculator

Good morning my friends, i am back today with graphing calculator online for free, i just wanted you to know that along with online math help we also have many sites which will help you even in graphing, look for such sites.

Well, you have know the uses of factoring calculator lets look for a problem which will help us solve a problem below and this will give you a clear picture on graphing calculator.

Problem No1:-

Solve the given system of equations by graphing calculator,

y = 5x + 15

y = x + 5

Solution:

Arrange the given equation in standard form,

5x - y = -15 equation 1

x - y = -5 equation 2


5x - y = -15

x - y = -5 (subtracting)

4x = -10

4x = -10

Divide 4 on both sides,

4x/4 = -10/4

x = -2.5

Plug in the x value in equation 1.

4(-2.5) - y = -15

-10 - y = -15

Add 10 on both sides

-10 + 10 - y = -15 + 10

-y = -5

y = 5

The graphing points are (-2.5, 0) and (0, 5). Look at the graph below.



We will work on quadratic formula calculator in our next post. Do you have some topic that you want me to discuss let me know that and i will work on it....

Tangent circle

Folks...this post is the continuous of my previous post. I had explained you what is circle properties which had various properties of a circle. Now lets work on tangent circles and begin our journey towards our destiny....

Tangent Circles:- Circles that intersect each other are called as tangentcircles. Geometry constructions are related to these tangent circles. Lets us solve some problem related to tangent circle radius.

Find the equation of the tangent at (-2, 3) to the circle x² + y ² – 13 = 0.

Soln: (x₁, y₁) = (-2, 3).

The tangent is x (-2) + y (3) – 13 = 0

" style="vertical-align: middle;" src="http://www.tutorvista.com/js/jsMath/wysiwyg_asciimath/mimetex/mimetex.cgi?%5Cdisplaystyle%5CRightarrow"> - 2x + 3y – 13 = 0

" style="vertical-align: middle;" src="http://www.tutorvista.com/js/jsMath/wysiwyg_asciimath/mimetex/mimetex.cgi?%5Cdisplaystyle%5CRightarrow"> 3y = 2x + 13.

There are two types of tangent circles called internal tangent circle and external tangent circle.

Well give me your views on this post. How good was this???

Circumference of the Circles

In geometry circle is a very essential topic and is what we will be discussing today.

Lets discuss the circumference of the circle,

Circumference of the circle:- The distance around the circle is Circumference. The formula to find the Circumference of a circle C is C = 2 × Pi × r. Circumference of a circle is 2 times the value of pi times r. Pi=3.142 which is a constant value.

Below i have a example to find the circumference of a circle equation is also mentioned below.

Example 1:

Find circumference of the circle with radius 6cm?

Solution:

Formula to find circumference of the circle = 2 pi r

Here ,radius =6cm.

Substitute these value into formula we get ,

Circumference of the circle = 2*3.14*6 [pi =3.14 or 22/7]

=37.68cm

Now you are perfect with this topic right, let me know how much you have understood the topic and if any comments let me know that as well.

Complex numbers represented by a Graph

We been working on Complex numbers and the Complex number properties so long, look at the picture beside, it is a complex number which can be represented by a Graph too.

I will discuss on this topic today, Complex numbers can be represented by a graph as shown in the figure.

To understand the concept easily, first take a look at my earlier blog which gives you the details on what is a complex number and you need to take a look at the picture carefully and read the content below.


Complex numbers represented by a Graph:- Complex numbers can be represented on a complex plane. Horizontal axis is used for the real part and the vertical axis is used for the imaginary part. The complex number Z = x + iy may be represented graphically by the point P whose rectangular co-ordinates are (x, y).
Each point in the plane is associated with a complex number.

Check out for more information on this, i am sure you must be enjoying reading this as much as i do while posting it, Friends, this is a good concept in mathematics and i will be able to understand your views only if you comment, feel free to comment....

Complex numbers

Guys, how good are you all in imaginations? Do you imagine things, or new ideas? I do and i am sure you also must be doing the same. Do you know we have imaginary numbers in mathematics also. Strange right, but true. We will learn on this more. Complex numbers is the topic i am going to discuss. Lets learn more on What is a complex number and different types of complex number.

Introduction to complex numbers:- It is a combination of real and imaginary numbers. These numbers have ordinary numbers which are real numbers but they extend themself by adding some extra numbers by addition and multiplication. These numbers are used in fields like engineering, electromagnetism, chaos theory and so on...These numbers can be represented as pair of numbers.

Lets assume if x and y are real numbers, then x + iy is called a complex number. Here x is called the real part and y is called the imaginary part. Square root of a negative number is known as an imaginary number.

Example of a complex number:- Z=x+iy

Different types of Complex numbers:- Equality of Complex numbers, Sum of two Complex numbers, Negative of a Complex number, Additive identity of the Complex number, Additive inverse of a Complex number, Product of two Complex numbers, Multiplicative identity of Complex numbers, Conjugate complex numbers, Quotient of two non-zero Complex numbers, Reciprocal of a non-zero complex number or multiplicative inverse of a non-zero complex number.

I have discussed the definition of complex number and what are the different types of complex number, i am sure you would have enjoyed as much as i enjoyed posting it. Let me know your comments on this.