| 123725 | Solve Systems of Equations Using Matrices · Exercise 12 | Easy | OpenStax | |
| 123727 | Solve Systems of Equations Using Matrices · Exercise 14 | Easy | OpenStax | |
| 123747 | Solve Systems of Equations Using Matrices · Exercise 34 | Easy | OpenStax | |
| 134720 | … is a combination of … and … and | Easy | Strang | |
| 134721 | The planes …, …, and … intersect at | Easy | Strang | |
| 134722 | The point … is on the planes …, …, | Easy | Strang | |
| 134723 | A combination of … and … and … equals | Easy | Strang | |
| 134728 | The vectors … and … lie in a plane which is perpendicular… | Easy | Strang | |
| 134729 | The plane … is perpendicular to its normal vector … ______ | Easy | Strang | |
| 134731 | Compute the cross products of each pair of columns in … (three… | Easy | Strang | |
| 134732 | Compute the inverses of … and … above | Easy | Strang | |
| 134733 | Solve … and | Easy | Strang | |
| 134735 | Find a nonzero solution to | Medium | Strang | |
| 134737 | Choose any right side … that is not perpendicular to | Medium | Strang | |
| 134738 | Compute the matrix product … and then its determinant | Medium | Strang | |
| 134739 | Compute the matrix products … and | Medium | Strang | |
| 134740 | Add … and … by adding each entry of … to the… | Medium | Strang | |
| 134741 | Compute … by multiplying each entry of … by 2 | Medium | Strang | |
| 134742 | Which four entries of … give the upper left corner entry … | Medium | Strang | |
| 134743 | The 2 by 2 determinants from the first two rows of … | Medium | Strang | |
| 134745 | From the multiplication … it follows that the inverse of … is… | Medium | Strang | |
| 134747 | Find all six of the 3 by 3 permutation matrices (including …)… | Medium | Strang | |
| 134749 | Multiply any matrix … by the permutation matrix … and explain how… | Medium | Strang | |
| 134750 | After elimination solve for … (back substitution) | Medium | Strang | |
| 134752 | **Note:** If elimination creates a zero in the "pivot position," try to… | Deep | Strang | |
| 105307 | Matrices and Matrix Operations · Try It 2 | Easy | OpenStax | |
| 105321 | Matrices and Matrix Operations · Exercise 15 | Medium | OpenStax | |
| 105323 | Matrices and Matrix Operations · Exercise 17 | Medium | OpenStax | |
| 105331 | Matrices and Matrix Operations · Exercise 25 | Medium | OpenStax | |
| 105337 | Matrices and Matrix Operations · Exercise 31 | Medium | OpenStax | |
| 105343 | Matrices and Matrix Operations · Exercise 37 | Medium | OpenStax | |
| 105345 | Matrices and Matrix Operations · Exercise 39 | Medium | OpenStax | |
| 105358 | Matrices and Matrix Operations · Exercise 55 | Medium | OpenStax | |
| 105380 | Solving Systems with Gaussian Elimination · Try It 4 | Easy | OpenStax | |
| 105387 | Solving Systems with Gaussian Elimination · Try It 6 | Easy | OpenStax | |
| 105391 | Solving Systems with Gaussian Elimination · Try It 7 | Easy | OpenStax | |
| 105408 | Solving Systems with Gaussian Elimination · Exercise 19 | Medium | OpenStax | |
| 105411 | Solving Systems with Gaussian Elimination · Exercise 23 | Medium | OpenStax | |
| 105413 | Solving Systems with Gaussian Elimination · Exercise 25 | Medium | OpenStax | |
| 105415 | Solving Systems with Gaussian Elimination · Exercise 27 | Medium | OpenStax | |
| 105417 | Solving Systems with Gaussian Elimination · Exercise 29 | Medium | OpenStax | |
| 105419 | Solving Systems with Gaussian Elimination · Exercise 31 | Medium | OpenStax | |
| 105421 | Solving Systems with Gaussian Elimination · Exercise 33 | Medium | OpenStax | |
| 105423 | Solving Systems with Gaussian Elimination · Exercise 35 | Medium | OpenStax | |
| 105425 | Solving Systems with Gaussian Elimination · Exercise 37 | Medium | OpenStax | |
| 105429 | Solving Systems with Gaussian Elimination · Exercise 41 | Medium | OpenStax | |
| 105431 | Solving Systems with Gaussian Elimination · Exercise 43 | Medium | OpenStax | |
| 105433 | Solving Systems with Gaussian Elimination · Exercise 45 | Medium | OpenStax | |
| 105435 | Solving Systems with Gaussian Elimination · Exercise 47 | Medium | OpenStax | |
| 105437 | Solving Systems with Gaussian Elimination · Exercise 49 | Deep | OpenStax | |