I love Math . I want to become mathematician

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## If $A$ and $B$ are $n×n$ matrices such that $AB=B$ and $BA=A$ then find the value of $A^{4} + B^{4} - A^{2} -B^ {2} + I$

asked Dec 24 '14 at 0:17

## Lagrange Multiplier Question and my attempt

asked Nov 15 '14 at 5:26

## The roots of equation $x3^x=1$ are

asked Jan 17 '16 at 11:14
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