Saturday 28 July 2012

rational expressions applications

In the previous post we have discussed about Fibonacci Numbers and In today's session we are going to discuss about rational expressions applications. Rational expressions applications defines the uses of rational expressions in different area of mathematics. A rational expression is expressed as the ratio of polynomial equations as:
p > 2 + q / p – q > 2. These kind of expressions are known as relational expression. There are several formulas that having the rational expression and for solving it multiply both the side of equation with the LCD that is used for eliminate the denominators of the expression.
We can define it by a simple example as if there is an equation that express a line (-2 , 4) and have the slope 3 / 2 that is written by a rational expression (y – 4) / ( x + 2) = 3 / 2.
Now we cam solve it as (y – 4) / (x + 2) = 3 / 2
Multiply both the side of expression with the LCD (x + 2) as;
(x + 2) (y – 4) / (x + 2) = (x + 2) 3 / 2.
In this step solve all the calculations as y – 4 = 3 x / (2 + 3);
Now it will be more simplified as y = 3 x / (2 + 3 + 4)
Y = 3 x/ (2 + 7) , this expression gives a line equation for particular coordinates. (know more about Rational function, here)
There are numerous expression in mathematics as relation between rate, time and distance is also define by d / t = r where d is the distance, t is time taken to cover that distance and r describe the rate of speed.
Valence Electron Configuration is studied in atomic physics and quantum chemistry that define the configuration of electrons.
Central board of secondary education provide cbse syllabus for class 1 that mention all the topics come into the respective session.

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