Match List with List II. List gives matrices representing transformations
2020
Matchย List Iย withย List II.ย List Iย givesย 3ร3ย matrices representingย 2๐ทย transformations andย List IIย shows the corresponding transformation diagrams.

Choose the correct answer from the options given below:
- A.
๐ดโ๐ผ๐,๐ตโ๐ผ๐ผ,๐ถโ๐ผ๐ผ๐ผ,๐ทโ๐ผ
- B.
๐ดโ๐ผ๐,๐ตโ๐ผ๐ผ๐ผ,๐ถโ๐ผ๐ผ,๐ทโ๐ผ
- C.
๐ดโ๐ผ๐ผ๐ผ,๐ตโ๐ผ๐ผ,๐ถโ๐ผ๐,๐ทโ๐ผ
- D.
๐ดโ๐ผ๐ผ,๐ตโ๐ผ๐,๐ถโ๐ผ๐ผ๐ผ,๐ทโ๐ผ
Attempted by 61 students.
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Correct answer: D
Solution overview: Identify each 3ร3 homogeneous matrix by its effect on 2D coordinates, then match it to the appropriate diagram.
Matrix [2 0 0; 0 2 0; 0 0 1] โ uniform scale by factor 2. Diagonal entries (2,2) scale x and y; this matches the scale diagram (scale (2,2)).
Matrix [1 0 2; 0 1 2; 0 0 1] โ translation by (2, 2). The last column (2,2) gives the translation vector; this matches the translate diagram (translate (2,2)).
Matrix [0.5 -0.866 0; 0.866 0.5 0; 0 0 1] โ rotation by 60ยฐ. Entries match cos60ยฐ = 0.5 and sin60ยฐ โ 0.866, so it is a rotation matrix; this matches the rotate(60ยฐ) diagram.
Matrix [1 2 0; 0 1 0; 0 0 1] โ horizontal shear (x' = x + 2y). The off-diagonal 2 in the top-right produces a shear in the x-direction; this matches the shear diagram.
Final matching (matrix โ diagram): [2 0 0; 0 2 0; 0 0 1] โ scale, [1 0 2; 0 1 2; 0 0 1] โ translate (2,2), [0.5 -0.866 0; 0.866 0.5 0; 0 0 1] โ rotate 60ยฐ, [1 2 0; 0 1 0; 0 0 1] โ shear.