If A=A‐¹ then A must be equal to either I or -I

Hacking is when someone without the right to do so, goes into your accounts or stuff and takes over it and you can’t get back on it.

Yes, by adjusting the boot order.

Hypothesis: volumes of both figures are equal.the volume of  figure 1 is: .the volume of figure 2 is: .since , you can conclude that and . so, .volumes of figures are equal only when an angle in the basis is right (then figures will be the same), in another cases volume of figure 1 is less than volume of figure 2.the hypothesis was not correct in all cases.

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