remember that [y] + [-y] = -1 when y is not an integer.
7 Answers
JOHNCENA IS BACK
·2010-01-12 00:53:06
sir, i asked coz in book ans. given is (b)...........so wat is correct ans??????
i m getting it as neither odd nor even
JOHNCENA IS BACK
·2010-01-12 00:57:34
i tried using f(x)+f(-x)=0 to check if its odd...........but concluded that it is not odd.........maybe i m doing some error .....plz provide ur solution
thnx
eureka123
·2010-01-12 06:49:51
cos(-x)=cosx ... so lets conc only on Denominator
g(x)=[2xπ]+12
g(-x)=[-2xπ]+12
=-[2xπ]-1+12
=-[2xπ]-12
=-([2xπ]+12)
clearly g(x) is odd
=> f(x) is odd