Wikipedia:Reference desk/Archives/Mathematics/2014 April 18

= April 18 =

Extreme points problem
if x= -1 and x=2 are extreme points of f(x)= alog|x|+x then find the value of a and b — Preceding unsigned comment added by 106.219.174.138 (talk) 15:46, 18 April 2014 (UTC)


 * You mean f(x)= alog|x|+b ?? — Preceding unsigned comment added by 86.179.3.227 (talk) 20:35, 18 April 2014 (UTC)

the locus of the foot of perpendicular drawn from the centre of the ellipse x^2+3y^2 on any tangent to it is: — Preceding unsigned comment added by 106.219.174.138 (talk) 15:49, 18 April 2014 (UTC) Rojomoke (talk) 10:17, 19 April 2014 (UTC)
 * See also Pedal curve.--RDBury (talk) 15:51, 19 April 2014 (UTC)