InterviewSolution
Saved Bookmarks
| 1. |
If [sinx]+[sqrt(2)cosx]=-3,x in[0,2pi]([.]-GIF), "then" x in |
|
Answer» `((5PI)/(4),2pi)` `A^(n)-B^(n)=(A+B)(A^(n)-B^(n))-AB(A^(n)-B^(n))` `impliesI=A+B-AB""[becauseA^(n)-B^(n)"is INVERTIBLE"]` `IMPLIES (I-A)(I-B)=0` As A, `B ne l`, we get I-A and I-B are singluar MATRICES. |
|