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If a square matrix such that `A^2=A` , then `(I+A)^3-7A` is equal to `A` (b) `I-A` (c) `I` (d) `3A`

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If A is a square matrix such that A^2=A , then (I+A)^3-7A is equal to

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RD SHARMA ENGLISH-ALGEBRA OF MATRICES-All Questions
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  2. If S=[S(i j)] is a scalar matrix such that s(i i)=ka n dA is a square ...

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  3. If a square matrix such that A^2=A , then (I+A)^3-7A is equal to A ...

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  7. If A and B are symmetric matrices, then A B A is (a) symmetric m...

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  8. If A=[(5,x),( y,0)] and A=A^T , then a) x=0,\ \ y=5 (b) x+y=5 (c)...

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  9. If A is 3xx4 matrix and B is a matrix such that A^T B and B A^T are bo...

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  17. If I=[(1 ,0),( 0, 1)] , J=[(0, 1),(-1 ,0)] and B=[(costheta,sintheta...

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  19. If A=[a(i j)] is a scalar matrix of order nxxn such that a(i i)=k f...

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