Matrix Solver Step by Step vs SwipeDrill

“Matrix Solver Step by Step” Linear Algebra learning tool and a Matrix Calculator: * Performs most commonly used matrix calculations and decompositions (see list below). * Demonstrates and explains algorithm steps for almost all the functions. * Draws interactive geometric references when appropriate. * Provides tutorials (explanations and proofs) for most Linear Algebra concepts. The tutorial topics have links to all other relevant topics, making them understandable for users with minimal prior knowledge of Linear Algebra. Every effort is being made to ensure user friendly interface and factual accuracy. The app is, so far, free of charge and free of ads. It is being continuously updated with new functions, graphs, and proofs. Suggestions and corrections are welcome! Write to us at graphmath@aol.com. List of functions (matrix size up to 8x8): 1. Solution for linear systems, real and complex. 2. Geometric solutions for 3 equation linear systems. 3. Matrix multiplication. 4. Matrix inverse, real and complex. 5. Determinant (row reduction, recursive and permutations methods). 6. Eigenvectors and eigenvalues, both real and complex. 7. Diagonalization. 8. Rotation-scaling similarity transformation. 9. Block-diagonalization transformation. 10. PLU factorization for square matrices. 11. LD(L transposed) factorization for symmetric matrices. 12. Column-Row factorization. 13. QR factorization by 3 existing methods: Gram-Schmidt, Givens rotations and Householder reflections. 14. Singular Value Decomposition (SVD), including using of SVD for Image compression. 15. Polar factorization. 16. Interactive graphs for transformation by 2x2 and 3x3 matrices, with derivation of specific matrix types, such as rotation or reflection. 17. Raising a Matrix to power n, where n is any integer between -10 and 10. 18. Matrix exponentials, x = exp(A*t) * x0. 19. Markov chain calculator. 20. Calculation of Correlation matrices and Principal Component Analysis (PCA). UI features: Most recent matrix entry for particular operation and size is saved between program runs. Input or output matrices can be saved to clipboard and pasted into other input screens in the app, text files and spreadsheets. Matrix and Linear Equations entries can be saved into table and are available after application is closed and re opened. Matrix entries can be filled with random numbers, different options for range are provided. Solutions as fractions are available for many functions. Eigenvalues and eigenvectors are shown as fractions and radicals for 2x2 matrices. Tutorial items can be saved into "My Tutorial Chapters" list. Comments can be added to most tutorial chapters and saved into "My Comments" list.

Every developer uses Git. Few actually master it. SwipeDrill: Git turns the official Git documentation into daily swipe quizzes so you stop guessing and start knowing. One card, one concept, one step closer to confidence on any team, any codebase. HOW IT WORKS Each card shows a statement about Git behavior, commands, or concepts. Swipe right if it's true. Swipe left if it's false. Instant explanation tells you exactly why so the knowledge actually sticks. WHAT YOU'LL MASTER - Git Basics: init, clone, config, and core concepts - Commits and History: log, diff, amend, and revert - Branching: create, switch, delete, and track branches - Merging: fast-forward, three-way, and conflict resolution - Rebasing: interactive rebase, squash, and reorder - Remote Repositories: fetch, pull, push, and remotes - Stash and Tags: save work in progress, tag releases - Workflows: Gitflow, trunk-based, and team conventions 800+ questions. Sourced from official Git documentation. WHO THIS IS FOR - Developers who still Google "how to undo a commit" - Junior devs building confidence before code reviews - Engineers preparing for technical interviews - Students learning collaborative development - Anyone switching from SVN or other version control systems PREMIUM FEATURES Upgrade once. Use forever. - Sequential Mode: work through all questions in order - Bookmarks: save tricky questions and review them later - Detailed Stats: track accuracy and progress per category - No Ads: completely ad-free experience STUDY SMARTER - Daily Goal tracker: build a consistent study habit - Streak counter: keep your momentum going - Review Mode: replay only the questions you got wrong - Today's Command: a new featured concept every day - Works offline: questions bundled in the app A NOTE ON CONTENT All questions are based on official Git documentation. While we strive for accuracy, content may occasionally contain errors or reflect outdated information. Always verify critical details against the latest official sources. Stop Googling. Start knowing. Download SwipeDrill: Git and swipe your way to fluency.