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25 votes
I can’t find the correct matrix formulation to multiply against

I can’t find the correct matrix formulation to multiply against-example-1
User Roman Scher
by
3.2k points

1 Answer

23 votes
23 votes

SOLUTION

According to matrix transformation rule, rotation across 180 degrees counter-clockwise is given as


x,y\rightarrow-x,-y

Now, each of the elements of the matrix are points. Hence


\begin{bmatrix}{0} & {-3} & {5} \\ {0} & {1} & {2} \\ {} & {} & {}\end{bmatrix}\rightarrow\begin{bmatrix}{-0} & {-(-3} & {-5} \\ {-0} & {-1} & {-2} \\ {} & {} & {}\end{bmatrix}\rightarrow\begin{bmatrix}{0} & {3} & {-5} \\ {0} & {-1} & {-2} \\ {} & {} & {}\end{bmatrix}

Hence, the answer is


\begin{bmatrix}{0} & {3} & {-5} \\ {0} & {-1} & {-2} \\ {} & {} & {}\end{bmatrix}

User Eliko
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