Thursday, June 3

Example on how to solve polynomial


Introduction:

          In math, variables and constants with the operations of addition, subtraction, multiplication, and non-negative, whole-number exponents of finite length is known as a polynomial or in-determinates. For example, x2 − 4x + 7 is a polynomial, but x2 − 4/x + 7x3/2 is not, because its second term involves division by the variable x and because its third term contains an exponent that is not a whole number.

Example:

X2+4X-5=0,

                   X2-X+5X-5=0,

                   X(X-1) +5(X-1) =0,

                   (X-1)(X+5) =0.                         Therefore the roots are X =1, -5...

                       (OR)

USING THE FOMULAE:

                   X = ` (-B + sqrt (B^2 - 4AC))/(2A)`

                   X2+4X-5=0 -------------------> (2)

                    AX2+BX+C=0----------------> (3)

Comparing (2) and (3),

A = 1, B =4, C =-5 Substitute these values in one.

        x = `(-4 +- sqrt (4^2 - 4(1)(-5)))/(2(1))`

          x = `(-4 +- sqrt (16 +20))/(2)`

          x = `(-4 +- sqrt (36))/(2)`

         x = `(-4 +- 6)/(2)`

        x = `(-10)/(2)``(2)/(2)`

       x = -5, 1

Hope you like the above example. Please leave your comments, if you have any doubts.


Numeric sequence and Types

Introduction:

The numeric sequence is called linear sequence. The numeric sequence are communicable to the constant rates of change and form the straight lines which is graphed.

        The numeric sequence are  15, 17, 19, 21, 23, 25… is a linear sequence that are represented in the table. The numeric sequence is used to draw graph, they provide straight line.

Example:

15, 17,19,21,23 this example numeric sequence the constant value  is 2.

Numeric Sequence Explanation and Types:

The numeric sequences contain any one number series. Some of then numeric sequences are given below.

1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ….etc the constant numeric sequences value is one

15, 17, 19, 21, 23, 25, 27, 29…..etc. the constant numeric sequences value is one

The above are simple explanation of the numeric sequence.

Different types of numeric sequences are :

  • Arithmetic sequence
  • Geometric sequence  
  • Fibonacci Sequence

How to solve rational equation

Introduction:

Solving rational equations is one of the important topics that we need to know. What we do to one side of the equation, must do to the other. If we have fractions, we try to eliminate them by multiplying by the common denominator. Suppose, If there are quadratics involved, we must get all terms to one side with zero on the another.

Steps involved in solving a rational equation

Solving rational equation is an important to see at an equation that not having a variable in the denominator to make confident that we see the pattern for calculating rational equations. The following steps we will use in the solution process.

1. First we need to determine the least common denominator of the fractions in the given rational equation.

2. We need to take out the fractions by multiplying All terms by the least common denominator.

3. Then we have to simplify the terms in rational equation.

4. Solve the resulting equation.

5. Check the answers to make confident the solution does not make the fraction undefined.

Let’s look at first, how we would handle the equations like x/3 + 2x/2 = 4

Our first step in solving this equation is to multiply each term by its least common denominator of the fractions, which is 6

(6) x/3 + (6) 3x/2 = (6) 4

Simplifying the above equation results in the linear equation which we can solve to get our final answer.

2x + 6x = 24

8x = 24

x = 3


Hope you like the above explanation. Please leave your comments, if you have any doubts.

Thursday, May 27

Solve absolute value inequalities

Introduction:

        Other than algebra, there is one more important inequality. It is called as Absolute value inequality. The absolute value for any number is numerical value regardless of its sign.  For example, the absolute value of | -5 | is 5 and │+5 │ is 5. Here the vertical lines denotes absolute value.
It is a little more difficult when dealing with equations. There are three possible outcomes for absolute value inequalities. 
  1. If x is any expression and a any positive number, and │x │= a, then it has either x = a or x = - a values.
  2. If x is any expression and a any positive number, and │x │<>
  3. If x is any expression and a any positive number, and │x │> a then it looks   x < -a and x > a.

Example
Solve: │4x – 4 │ = 8
Solution:
Use the result, if |x| = a, then x = a or x = -a
Here │4x – 4 │ = 8
So, it has either 4x – 4 = 8 or  4x – 4 = -8 values.
Solve each equation using the addition and multiplication principles.
4x = 12,    4x = -4
after solving the equation, we get
x = 3,     x = -1. Answer

Hope you like the above explanation to solve the absolute value inequalities, Please leave your comments, if you have any doubts.

Practice of Algebra Application

Introduction:
 Applications of algebra are found everywhere; the principles of algebra are applied in all branches of mathematics, for instance, calculus, geometry, and topology. They are applied every day by men and women working in all type of business. As a typical example of applying algebraic methods.
     Algebra is often referred to as a generalization of arithmetic, so it is collection of rules, then the rules for translating words into symbolic notation of mathematics, rules for formulating statements using symbolic notation, and rules for rewriting mathematical statements in  a manner that leaves their truth unchanged. 

Application of Algebra in Slopes of Straight Lines:

In general slope of equation is y=mx+b
Practice  Problem 1:
Y=x-3
Where m=1 (co efficient of x)
               B=-3
Equation of point-slope :
 Formula for point,slope
                (y-y1)=m(x-x1)

Practice  problem 1.  Find the equation of the line which passes through the point (2, 2) and has slope3.
Solution:
       Equation is    (y-y1)=m(x-x1)
Where, x1=2
                Y1=2
                M=3
So,
        y-2=3(x-2)
        y-2=3x-6
Answer is: 3x-y-4=0

Learn factor polynomials calculator

Introduction:
         Calculator is used to solve different types of problems. It is a web-based tool designed to solve different problems. Learning factor polynomials through calculators is simple. 
      Factor polynomials calculator are used to understand the polynomials factorization. Given expression can be factorized by using the greatest common factor. Let us discuss about the learn factor polynomials calculator.

Steps to learn factor polynomials:

The Steps to learn factor polynomials are as follows:
  • Given expression can be arranged in the order of powers.
  • Expression can be in the form of standard ax2 + bx + c = 0.
  • The expression should be factorized.
  • Solve the given terms.

Example problems to learn factor polynomials calculator:

Factorize: 42ax + 36bx – 7ax2– 6by2 using factor by group
Solution:
Step 1:
          Given expression 42ax + 36bx – 7ax2– 6by2
Step 2:
           Given expression in the standard form ax2 + bx + c = 0
                     42ax + 36by – 7ax2– 6by2 = 0
Step 3:
           Groups the terms
                      42ax – 7ax2 +36by – 6by2 = 0
                      7ax (6 – x) + 6by (6 – y) = 0
Step 4:
           The greatest common factor for the expression
                      7ax (6 – x) + 6by (6 – y) = 0
                     (7ax + 6by) (6 – x) (6 – y) = 0
Solution to the given equation is (5a – 6x) (3b – 4y) (b – 3y) = 0.

Hope you like the above explanation, Please leave your comments, if you have any doubts.

About Polynomials


Introduction:

           An algebraic expression in which the variables have only non negative powers is called polynomial.  The monomial midterm study which contains finite number sum in x it said to be polynomial. The coefficients of the polynomial are said to be coefficients of the monomial in a polynomial. If coefficients of a polynomial are zero, then polynomial is said to be  zero polynomial. The highest coefficient power of x in a polynomial is called the leading coefficient for polynomial


Fundamental of Polynomial

Constants and variables are the fundamentals of polynomials.
Examples :In the formula for circumference of a circle, c=2π r 2 and π are constants and c and r are variables

Degree and Types of Polynomials

Polynomials with more than one variable, the sum of powers of the variables taken up and the highest sum so obtained is called the degree of the polynomial.
Monomial, Binomial and Trinomials are three different types of Polynomials.

Properties of Polynomials

Addition and subtraction of two polynomials mean combining like terms.
We can perform multiplication and division also

Factorization of Polynomials

     You know that any polynomial of the form p(a) can also be written as
p(a) = g(a) x h(a) + R(a) it implies that Dividend = Quotient X Divisor + Remainder.
If the remainder is zero, then p(a) = g(a) x h(a). That is, the polynomial p(a) is a product of two other polynomials g(a) and h(a).