|(ax+by)(ay+bx)| < x^2+y^2

Algebra

|(ax+by)(ay+bx)| < x^2+y^2

Postby Guest » Sun Sep 13, 2020 5:58 pm

If [tex]|(ax+by)(ay+bx)|\le x^2+y^2[/tex] holds for all real x and y, then prove [tex]a^2+b^2\le 2[/tex]
Guest
 

Return to Algebra



Who is online

Users browsing this forum: No registered users and 1 guest