Saturday, 16 June 2012

Factoring Trinomials

We know that the trinomial is the polynomial formed by three terms. To learn about Factoring Trinomials, we say that the standard form of the trinomial is ax>2 + bx + c.

 To find the factors of the above given polynomial , we say that we will either write it in form of some or the other identity or we will try to factorize it by the splitting method. In the splitting method, we say that the middle term of the trinomial is split in such a way that the sum of the two terms is equal to bx (i.e. the second term) and the product of the two split term is equal to the product of the first and the third term of the trinomial.

 Let us look at the following examples:

If we have the polynomial:  4x>2  + 12x + 9

 Here we can   write the above given polynomial as  ( 2x )>2 + 2 * 2x * 3 + 3>2

We observe that the above given polynomial is in the form of the identity (a + b) >2 = a>2 + 2 * a * b + b>2

 So it can be written as (2x + 3) >2

 If we solve the polynomial by splitting the second term we say it can be written as :

4x>2 + 6x + 6x + 9

= 2x * ( 2x + 3 ) + 3 * ( 2x + 3 )

= ( 2x + 3 ) * ( 2x + 3 ) = ( 2x + 3 ) >2 Ans

 We will learn about Function Notation, by visiting the online math tutors and understand the concept related to this topic.  We can also download Previous Year Question Papers Of CBSE for the particular subject and it will help us to  have a look on the  pattern of the  previous year question papers.

 

Thursday, 7 June 2012

How to use Gcd Calculator

In the previous post we have discussed about How to use LCM Calculator and In today's session we are going to discuss about How to use Gcd Calculator, By GCD, we mean greatest common divisor. If we want to learn about the divisor of the given numbers, we mean that   the greatest divisor, which is divisible by all the given numbers.  To learn about gcd, we will first find the factors of the given numbers. We must ensure that the factors of the given number should be all prime factors. Now we will pick the factors of the given number such that  they are common to both the numbers whose gcf is to be calculated.  In case the gcf is one, the two numbers are not having any of the common factors. We use gcf to find the lowest form of the fraction numbers, rational numbers or the ratios. It simply signifies that the two numbers whose gcf is 1, cannot be divided by the same number. We must remember that the  gcf of two prime numbers is always 1
 Suppose we want to find the gcf of 9 and 12
Here we will first find the prime factors of 9 and 12. So we say that the prime factors of 9 = 3 * 3 * 1 and the prime factors of  12 = 2 * 2 * 3 * 1
 In both the prime factors we find that the numbers 1 and 3 are the prime factors of both the numbers. So  1 * 3 is the gcf  of  9 and 12.
 We can also use gcd calculator to practice the problems based on gcd and understand its logics clearly.  If we want to learn about the Central Tendency, we can take online help from the math tutor which is available online every time. To know more about the contents of CBSE syllabus we will visit the site of CBSE and collect the recent information to update our self.

How to use LCM Calculator

Lcm stands for the least common multiple. By the term Lcm, we mean the process of finding the number, which is the least common multiple of all the given numbers.  Let’s first see what is a multiple.  By the word multiple, we mean that the number which exactly divides the given number. Thus if we say that 12 is the multiple of 3, it means that the number 3 completely divides the number 12.
 Now if we  have to find the Lcm  of the two numbers say 3 and 6, then we will first write the  multiples of 3 and the multiples of 6, which are as follows :

Multiples of 3 = 3 , 6 , 9, 12, 15, 18,  21,  24,  . . . .  . .
Similarly, we have the multiples of  6 = 6,  12,  18, 24,  . . . . . .
 Now we will observe the common multiples of the two numbers 3 and 6 as 6, 12, 18, 24, 30 . . . . which means that these numbers  divides both the numbers completely.  Out of these numbers we say that the number 6 is the smallest number. So we come to the conclusion that  6 is the L.C. M of  the numbers 3 and 6.
In the same way we can find the LCM of 3 or more numbers also. We must remember that the LCM of 1 and any number n is n itself.

  We can also download Lcm Calculator or use it online to understand the concepts of Lcm. To understand the concept of the Circle Graph, we can study and learn from the books of CBSE or take the help of online math tutor.  We also have CBSE Sample Paper online which the students can download and  use as a guidance tool for the  students preparing for the exams and in the next session we will discuss about How to use Gcd Calculator.

Monday, 4 June 2012

Least Common Denominator

 In today's session we are going to discuss about Least Common Denominator, By Least Common Denominator, we mean the LCM of the denominators of given fractions. Before we learn about Least Common Denominator, let us quickly recall the terms LCM, fractions & denominator; we are already familiar with. By LCM, we mean lowest common denominator. It can be calculated for 2 or more numbers by long division, listing of multiples of the given numbers or in the best way, by prime factorization. Now, fractions are numbers in the form a/b . A fraction, as we can see in the expression, has two parts, a & b. Here, a is the numerator & b is the denominator of the fraction. Thus, we have recalled denominator also that it is the lower part in the fraction.
Now coming back to the topic of discussion, i.e. , Least Common Denominator or LCD ; as stated above is the LCM of the denominators of two or more fractions . But why do we need to find such LCD. As we know that the fractions may be like or unlike depending on whether their denominator is same or not & also that to add or subtract fractions; the fractions must be like fractions. If the fractions to be added or subtracted are like, we can add or subtract them easily. But for unlike fractions, we need to make them like by changing their denominators to Least Common Denominator. This is done by finding the LCM of the denominators of all unlike fractions. As for example; if we have to add 3/7+2/5+4/3. Here the fractions are unlike. So we’ll find the LCM of their denominators which comes out 105. Now we can change the fractions & make their denominator 105 by finding equivalent fractions. Thus, finally we have 3/7+2/5+4/3 = (45+42+140)/105=227/105. You can find the Independent Variable Definition at different places online . Also look for ICSE class 10 syllabus online and in next session we will discuss about How to use LCM Calculator.

Saturday, 2 June 2012

Adding Fractions Calculator

Fractions are the numbers which can be expressed in the form a/b , where a is called the numerator & b is called the denominator of the fraction . Numbers, in Mathematical terms can be added, subtracted, multiplied & even divided. Thus, we can do any of these on fractions as well; they being numbers. Here, we will learn about Adding Fractions Calculator.
As we are already familiar with the term addition of numbers, we will extend the same to addition of fractions now. Addition means more or something increased by. So, when we add fractions, we increase them actually of find a fraction one more than the other.
Now let us recall that fractions may be like or unlike depending whether the denominator of the given fractions is same or not. If the fractions have same denominator, we call them like fractions; else they are unlike fractions.
Adding like fractions is quite simple. We just have to add the numerators of the fractions to be added & give the denominator of the fractions given to the sum of numerators so obtained. Thus, if we have to add 5/9 & 2/9 , we observe that the fractions are like . So, we will just add the numerators and we get 5/9 + 2/9 = (5+2)/9 =7/9.
But, when we have to add unlike fractions, we first need to find the LCM of the denominators of the fractions to be added; thereafter making the given fractions like by taking their equivalent fractions with LCM as the denominator of all the fractions to be added. Next, we proceed like addition of like fractions. e.g., 1/6 + 2/5; these are unlike fractions & the LCM of denominators 6,5 is 30. Thus, changing the fractions to those with denominator 30, we get 1/6=5/30 & 2/5=12/30. Now, adding them we get 1/6+2/5=5/30+12/30 = (5+12)/30=17/30
You can get more on simplifying fractions online. Also class 12 icse sample papers are available online.

Friday, 25 May 2012

How to deal with factoring trinomials worksheet

To understand about factoring trinomials worksheet, we will first learn about what are trinomials. Trinomials are the polynomials, which has three terms. To find the factors of the trinomials,  say ax>2 + bx + c we will first break the middle term bx such that the  sum of the two terms is equal to bx and the product of the two spitted terms equals to the product of ax>2 and c.  Once the middle term is split into two parts, we observe that the polynomial now has 4 terms. Now we take common terms from the first two terms and similarly we take common from last two terms in such a way that we are left with the common terms in the brackets. Thus taking the common terms common, we get the factors of the given polynomial. (want to Learn more about trinomials , click here),
Sometimes we have the trinomials such that it forms the perfect squares of the given terms, in such situation we will write the terms in the forms of the perfect squares. Let us try some of the examples:  4x>2 +   12x + 9
    = (2x)>2 + 2 * 2 * 3 * x + (3)>2
 It is equivalent to the formula for  (a + b ) >2, so  that a =  2x and b = 3, so the resultant factors of the equation are
  = ( 2x + 3 ) >2
This solution can also be attained by the method of breaking, which is done as follows:
= 4 x >2 +  6x + 6x + 9
= 2x *  (  2x  + 3 ) + 3 ( 2x + 3 )
= ( 2x + 3) * ( 2x + 3 )
To learn more about the Box and Whisker Plot Definition, you need to take the help from online tutors. The detailed curriculum of ap state education board for different grades is available online.

In the next session we will discuss about Binomial Experiments and Read more maths topics of different grades such as subtracting integers worksheet in the upcoming sessions here.

Tuesday, 22 May 2012

factor algebra calculator

If we talk about algebra then you always need to deal with factors, factors can be done easily you need to have good knowledge of divisibility rule. If you are going to do the factor of any number then the first thing you need to notice is that the number is divisible by any number or not . We can make the factor algebra calculator by factoring any number but as I told you earlier that you also need to have knowledge about divisibility rule. If a number has 0, 1,2,4,6,8 at its end then it is divisible by 2. If you add the digit and the sum is a factor of three then the number will be divisible by 3, if the last two digit of any number is divisible by four then the whole number is divisible by 4. And if a number contain the end digit as 0 and 5 then number is divisible by 5. In this way we can find the factor of any given number , now if we find the factor of 126 then this number contains 6 at the end so it is a factor of two but when we divide it by two the resulting number will be 63 , now it doesn’t contain a even number  at the end so now 2 will not be the factor if we see the sum of the number is 6 + 3 =9 and 9 is divisible by 3 so three will be the factor, if we divide 63 by 3 we have 21 , now 21 is again divisible by 3, so if we divide 21 by 3 we will have 7 and as we  know that seven is a prime number so only 7 will be the factor. So required factors are 2, 3, 3, and 7. Factors play a very important role in solving Algebra Problems. As the tamilnadu board exams are near so u need to buy Tamilnadu Board Sociology Sample Papers from the nearest shop.
In the next session we will discuss about How to deal with factoring trinomials worksheet and Read more maths topics of different grades such as Properties of Irrational Numbers in the upcoming sessions here.