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Forum: Homework Help 2019-10-13, 13:42
Replies: 10
Views: 9,475
Posted By Nick
Yes, and that is equivalent to \[...

Yes, and that is equivalent to
\[ \left(\begin{array}{cc}
1 & a \\
0 & 1
\end{array}\right)
=R_{-t}AR_t

\]
Forum: Homework Help 2019-10-13, 13:18
Replies: 10
Views: 9,475
Posted By Nick
Let t be the (smaller) angle between the line...

Let t be the (smaller) angle between the line y=2x and the x-axis.
You want to rotate clockwise through the angle t,
then perform the shear with the x-axis as its invariant line,
then rotate...
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