

InterviewSolution
Saved Bookmarks
1. |
If`f(x)={xcosx+(log)_e((1-x)/(1+x))a; x=0; x!=0`is odd, then `a_______,` |
Answer» For `x ne 0, f(x)=x cosx + log_(e)((1-x)/(1+x))` ` :. f(-x)=(-x)cos(-x)+log_(e)((1+x)/(1-x))` `= -x cosx-log_(e)((1-x)/(1+x))` `= -f(x)` For `x=0`, we must have `f(-x)= -f(x)` ` :. a= -a` ` :. a=0` |
|