Ononot — In a heatmap representing the matrix M{ij} = \sin(i) + \cos(

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In a heatmap representing the matrix $M_{ij} = \sin(i) + \cos(j)$ for $i, j \in \{1, 2, 3\}$ , what is the intensity difference between cell $(1, 1)$ and cell $(3, 3)$ ?