explain wavy curve with example and tell me how to do questions of wavy curve fast

Dear student,

here is wavy curve method:

1. make all terms linear
2. plot roots on NL
3. Put + sign on right most side
4. Then if power of factor is even sign will not change and if odd sign chages
5. Take the required interval

That’s it!
For detail explanation
http://www.askiitians.com/online-study-packages/linear-inequalities-for-jee-main-advanced


Thanks