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Systems
Gauss-Jordan (interactive)
Row-reduce a matrix step by step with your own row operations, with undo and redo.
Numbers
Folie 72 × 3
🎯 Challenge: reach the reduced row echelon formPar 3Your steps 0Best ☆☆☆
Choose +=, −= or ↔ on the row you want to change — or press · R to multiply a row by its factor.
Swipe sideways for the row controls →
R1
R2
Steps
How it works
- Every row has a factor, written as a fraction. It resets to 1 after it has been used.
- += / −= on row i, then click row j: Ri ← fi·Ri ± fj·Rj. Hover a row to preview the result.
- ↔ on row i, then click row j: swap the two rows.
- · Rj: multiply row j by its factor.
- Drag an entry onto a factor to copy it — or select the factor field, then click the entry.
- Leading entries (pivots) are highlighted; a badge appears once the matrix is in (reduced) row echelon form.