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in wavy curve how to decide whether to from +ve or -ve sign while desciding sign scheme?

in wavy curve how to decide whether to from +ve or -ve sign while desciding sign scheme?

Grade:12

1 Answers

Vinayak Gupta
56 Points
9 years ago

WE CAN UNDERSTAND WAVY CURVE METHOD BY THE FOLLOWING EXAMPLE :

     LET THE EQUATION BE   (x-a)(x-b)(x-c)  > 0

                                       (x-e)(x-f)(x-g)

IN THE GIVENN QUESTION WE ARE ASSUMING THAT   a,b,c    ARE LESS THAN ZERO.

FURTHER WE ASSUME THAT        g>f>e>0>c>b>a

 

       - + -    + -     + -      +   


                   a                b                     c                       0                     e                  f          g

 

HENCE THE SOLUTION WILL BE 

X BELONGS TO (A,B)U(C,0)U(E,F)U(G,∞)

 

APPROVE THE ANSWER IF HELPFUL.

THIS IS HOW WE ASSIGN - OR + SIGN WHILE DECIDING THE SIGN SCHEME.

 

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