Eliminate (d)

It would be

Science talk:Math Exam Resources/Courses/MATH152/April 2015/Question A 12

HyunjuKwon (talk)06:42, 3 March 2018

Thanks! I have added some proof to explain why we should eliminate (d).

AiliShao (talk)07:01, 3 March 2018

Thanks a lot, Aili!

HyunjuKwon (talk)07:06, 3 March 2018