Re: ISI 2014 PEA Answer Key

Posted by Granpa Simpson on May 09, 2014; 5:30am
URL: http://discussion-forum.276.s1.nabble.com/ISI-2014-PEA-Answer-Key-tp7587867p7589097.html

Q23) The equation to have two unique roots there can be two cases
Case 1: the equation is of the form f(x)=(x-1)*(x-a)^2, for this to hold alpha = (49/4), which is not given in the options.
Case 2: f(x)=(x-1)*(x-1)*(x-a), in this case one of the roots is 1 which occurs twice and the other is a, for this to hold alpha=6.
thus answer is option a.