Question

keep getting different answer to wolfram:

minimise cos(x)sin(y) given that x+ y = pi

Answer 1

cos(x) sin(pi - x) = cos(x)sin(x) = 1/2 sin(2x) ... min value -1/2

Answer 2

oh, i typed it in wolfram wrong i think

Answer 3

yeah that's the answer i got :)

Answer 4

how are you? long time since i've been on here

Answer 5

i'm fine ... have exams few days later ... how are you man??

Answer 6

good :) i got my results back from the exams i sat earlier this year

Answer 7

so you are entering university?

Answer 8

yeah! i got the grades they wanted. cant wait to start.

Answer 9

Cambridge??

Answer 10

nah, Oxford

Answer 11

Oxford is same as Cambridge ... based on you ability ... you would surely get into one of these.

Answer 12

thanks :) im just so happy to be going. they've sent me plenty of problems to prepare for the course

Answer 13

do your best!! you will be a very fine mathematician!!