Skip to main content

Partial fraction Shortcut Methods and Trick (आंशिक भिन्न )



In this article we are going to discuss about solving approach of partial fraction questions.
Partial fraction is widely used in integration problems in 12th level mathematics also in various competitive examinations.

General method

(px+q)/(xa)(xb).=A/(xa).+B/(xb)

For example:
Ques-:          2x + 3                                        
                   (x+1)(x-3)
Solution:  

                             2x+3         ------------(1)
                        (x+1)(x-3)
Seperating the equation
                 2x+3     =     A     +    B             -------(2)
               (x+1)(x-3)      (x+1)    (x-3)


               2x+3=A(x-3)+B(x+1)............(3)
*for.     (x+1)=0.   We have    x=-1
            On substituting 2+3=A(-1-3)
             1=-4A ,    A= -1/4
* Again if (x-3)=0 then x=3 again substituting
      2(3)+3=B(3+1)
      9=4B, B =9/4
A and B value equation (2)partial fraction is 
        -1       +      9     
     4(x+1)      4(x-3)  

Shortcut Method:
Ques-:          2x + 3                                        
                   (x+1)(x-3)


                          2x+3         ------------(1)
                        (x+1)(x-3)
Seperating the equation

                 2x+3     =     A     +    B             -------(2)
               (x+1)(x-3)      (x+1)    (x-3)




Substituting the obtained values.
    -1       +      9     
     4(x+1)      4(x-3)  

This way we can easily solve any partial fraction question in short time

If you have any doubt relating this article or topic you can comment and ask in specific.

Comments

Popular posts from this blog

General Topology Notes

General Topology Notes Mathematics  Here we are presenting you general Topology Notes in pdf form. Its comparatively hard to find general topology notes because of low online demand or usages. General Topology is widely used in various mathematics field and for educational purpose. Used for b.sc and m.sc in mathematics. Also used in Csir - Net and ugc net other competition exams. Before downloading you can have a check on the content. Contents of file/ lecture Notes 1 Lecture  1.1 History of Topology 1.2 Set Theoretic Preliminaries  1.3 Relations and Functions  1.4 Cardinality and Operations on Sets  2 Lecture 2.1 Logic and Techniques of Proof  2.2 Topology on a Set 2.3 Open and Closed Sets  3 Lecture 3.1 Set Theoretic Preliminary 3.2 Interior and Closure  3.3 Exterior and Boundary  3.4 Examples  4 Lecture 4.1 Interior, Closure, Exterior, and Boundary Points  4.2 Cluster Points and Isolated Points  ...

Vedic mathematics Tricks

In this article we are going to discuss about the shortcut tricks in vedic mathematics that can help us a lot in calculate in competitive examinations. इस आर्टिकल में हम वैदिक गणित द्वारा किसी भी प्रश्न का हल कम समय में प्राप्त करने की विधि के बारे में जानकारी लेंगे। 1) How to find square of number ending with  5 Let's learn it with an example we have to find the square of 35 then do what you have to do it you have to multiply the number on the left of digit 5 to itself plus one and to put 25 at the end of the obtained result (35)^2 =3*(3+1)....25at end            = 12..25 = 1225 Now let's try the same method for three digit number the number is 115 115^2 = 11*(11+1)...25at the end = 11*12...25at end =13225 Now you have to try does it works for you ? 2) Multiplying any number by 5 Divide the number by 2 that is half that number if the remainder is zero at  the end of half but if decimal number is in and the...