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Determinants

Level 17 - realistic untimed

2x2 realistic open (no timer)

6 visual blocks - diagonal and cofactor reading

1

Read the shape

Level 17 visual plan for 2x2 realistic open (no timer)
Identify matrix size and visible zeros. 2x2 realistic open (no timer).

Identify matrix size and visible zeros. 2x2 realistic open (no timer).

2

Pick the method

Determinants: block 2 Visual guide level shape 2x2 realistic open (no timer)Pick the methodUse diagonals for 2x2; sparse cofactors for 3x3. image-first, then practice
Use diagonals for 2x2; sparse cofactors for 3x3.

Use diagonals for 2x2; sparse cofactors for 3x3.

3

First move

Determinants: block 3 Visual guide level shape 2x2 realistic open (no timer)First moveChoose the row or column with least work. image-first, then practice
Choose the row or column with least work.

Choose the row or column with least work.

4

Check

Determinants: block 4 Visual guide level shape 2x2 realistic open (no timer)CheckTrack the sign before calculating. image-first, then practice
Track the sign before calculating.

Track the sign before calculating.

5

Play the mode

Determinants: block 5 Visual guide level shape 2x2 realistic open (no timer)Play the modeSpend the extra second on the check. image-first, then practice
Spend the extra second on the check.

Spend the extra second on the check.

6

Watch-out

Determinants: block 6 Visual guide level shape 2x2 realistic open (no timer)Watch-outA zero row or column ends the problem. image-first, then practice
A zero row or column ends the problem.

A zero row or column ends the problem.

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