2D Scaling Matrix

Problem

Build the 2x2 scaling matrix with horizontal factor sx and vertical factor sy:

S = [[sx, 0], [0, sy]]

Hint

The off-diagonal entries are always 0.

case 1

in: [2,3]

expected: [[2,0],[0,3]]

case 2

in: [1,1]

expected: [[1,0],[0,1]]

case 3

in: [-1,2]

expected: [[-1,0],[0,2]]

case 4

in: [0.5,-1.5]

expected: [[0.5,0],[0,-1.5]]

Starter codePython

def scaling_matrix(sx, sy):
    # Your code here
    pass

4 test cases · run your code against them in the editor