InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
यदि `x+1/x=-2` है तो `x^(2n+1)+1/(x^(2n+1))` का मान क्या है, जहां `n` एक धनात्मक पूर्णांक है। |
|
Answer» Correct Answer - C Shortcut method `x+1/x=-2` Let `x=-1` `implies-1+1/(-1)=-2` (matched so `x=-1`) Put `n=1` `x^(2n+1)+1/(x^(2n+1))` `impliesx^(3)+1/(x^(3))implies(-1)^(3)+1/((-1)^(3))=-2` |
|