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plz explain wavy curve method nd Modulus in mathematics 2 me as soon as possible
Dear Deepanshu Mohan,
If Suppose you have a polynomial function, (ax+b)(cx+d)....... ,and you would like to know where the function is +ve or -ve( on the real line of course) just arrange the roots in ascending order as on the no line.Start from the rightmost root.All values of the function for x greater than this root are +ve.Then in the interval between the largest and second largest the value is -ve and its goes on alternating between the roots. For example , take the case of x(3x+1)(3x-1),The roots are -1/3,0,1/3.x > 1/3 => expression +ve0< x < 1/3 => -ve-1/3< x < 0 =>+vex<-1/3 => -ve
Its called wavy curve because you can draw something like a worm curving its body on the no line.
Hope this helped you immensely.. All the Very Best & Good Luck to you ... Regards, AskIITians Expert, Godfrey Classic Prince IIT-M Please approve my answer if you liked it by clicking on "Yes" given below..!!
Hope this helped you immensely..
All the Very Best & Good Luck to you ...
Regards,
AskIITians Expert,
Godfrey Classic Prince
IIT-M
Please approve my answer if you liked it by clicking on "Yes" given below..!!
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