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NDA2017MathematicsMatricesActual

If A= [ array ll & - & array ] , then what is A^3 equal to?

Options

  1. A[ array ll 3 & 3 - 3 & 3 array ]
  2. B[ array cc ^3 & ^3 - ^3 & ^3 array ]
  3. C[ array cc 3 & - 3 3 & 3 array ]
  4. D[ array cc ^3 & - ^3 ^3 & ^3 array ]

Correct answer

A. [ array ll 3 & 3 - 3 & 3 array ]

Step-by-step solution

A= [ array cc & - & array ] We know, A^n= [ array cc n & n - n & n array ] A^3= [ array cc 3 & 3 - 3 & 3 array ]

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