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Mar31-12, 08:57 AM
P: 361
Quote Quote by rohan03 View Post
May be I am on mobile- time to switch pc on
Yes, that would probably help; easier to review the material already discussed too.

You should have your expression as a fraction consisting of a polynomial in the numerator (top) and another polynomial in the denominator limited by inequality to zero.

Finding the roots of those two polynomials shows you where they change sign.