Information:
During Gaussian elimination, large-magnitude values progressively become zeros below the diagonal. A heatmap visualization uses color intensity to show magnitude: dark (near zero) vs. bright (large magnitude).
The following heatmap shows the absolute values of matrix entries during elimination. Darker cells indicate values near zero; brighter (lighter) cells indicate larger magnitudes.

Legend: dark ≈ 0 (eliminated), medium = partial, light = large (unprocessed)

Which best describes the elimination status?

Question

Information: 
 During Gaussian elimination, large-magnitude values progressively become zeros below the diagonal. A heatmap visualization uses color intensity to show magnitude: dark (near zero) vs. bright (large magnitude). 
The following heatmap shows the absolute values of matrix entries during elimination. Darker cells indicate values near zero; brighter (lighter) cells indicate larger magnitudes.

Legend: dark ≈ 0 (eliminated), medium = partial, light = large (unprocessed)

Which best describes the elimination status?

Answer

Backward substitution is in progress starting from the lower-right quadrant area.

Answer

Column 2 is fully processed; column 3 is currently being processed at row 4 now.

Answer

Columns 1-2 are fully processed with only two elimination steps left to finish.

Answer

The dark pattern indicates accumulated round-off errors in the first two column entries.

Answer

Columns 1-3 are fully processed; only the final diagonal element needs correction.

Answer

Column 1 is done; column 2 is partially done with row 4 pending.

	C1	C2	C3	C4
R1	4	2	1	3
R2	0	3	2	4
R3	0	0	5	1
R4	0	2	3	2

Crowdly

Information: During Gaussian elimination, large-magnitude values progressively...

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