Inequalities
- Subject: [mg2471] Inequalities
- From: <rizzi at img.fr>
- Date: Mon, 13 Nov 1995 03:28:19 GMT
- Approved: usenet@wri.com
- Distribution: local
- Newsgroups: wri.mathgroup
- Organization: C.I.C.G. , Grenoble
- Sender: daemon at wri.com ( )
Let expr be an expression which depends on a and b. How can I check the sign of expr (e.g. positive) when a and b satisfy some inequality constraints? Example: f=(-9 - 23*c4 - 19*c4^2 - 5*c4^3 + 9*nu + 21*c4*nu + 15*c4^2*nu) Check the sign of f when -1 < c4 < Infinity and 0<= nu <= 0.5 Thanks in advance, Egidio rizzi at geo2.img.fr