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benjamin-rood/160_302_question1.md

Created March 6, 2016 00:23
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160.302 Questions
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160_302_question1.md

For question 2, do you mean:

$$ax \ mod \ n = 1$$

$\forall x \in \mathbb{Z}$ ? (Note, no brackets, as me are talking about the operation)

(I suppose as long as $x$ is a number, it doesn't make much difference....)

For question 3:

$$XA^{n} = A^{n}x$$

What is $x$? It can't be a vector, because the above statement can't ever be true when $X, A \in \mathbb{M}_{2}$

Is $x$ a scalar ?

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