Yash Baheti
Last Activity: 10 Years ago
Hi,
We are goin to follow the wavey curve method to answer this question. I hope u are aware of this method.
The reeots are as follows 1, -2, 3, -6, 0, 7
Also 1 has odd no of roots (i.e. sign change) and also 3, -6, 7 have odd no of roots at that values
Similarly -2, and 0 has even no of roots ie.e no sign change.
So grater than zero : (-inf to -6) U (1,3) U (7 to inf)
Grater than /equal to zero : (-inf to -6] U [1,3] U (7 to inf)
mind the bracketts