GeoGebra app Feb 2024 khoitsma General, Kids (middle school and up), Mathematics 0 Comments Screenshot Continue Reading

Reflection on Billiards and Math Feb 2024 khoitsma General, Kids (middle school and up), Mathematics 0 Comments This inscribed triangle is a periodic billiard trajectory called the Fagnano orbit, named for Giovanni Fagnano, who in 1775 showed that this triangle has the smallest perimeter of all inscribed triangles. Continue Reading

What is the Day of the Week? Jan 2024 khoitsma General, Kids (middle school and up), Mathematics, Mental Math 0 Comments Continue Reading

Hand Calculated Truss vs RISA Dec 2023 khoitsma Calculus, Computer Algebra, Engineering, Jupyter, Mathematics, Plotly, Python, RISA-3D, Sympy hand calculated, RISA, truss 0 Comments Continue Reading

Kolam Muggu Rangoli Dec 2023 khoitsma Calculus, General, Mathematics, Science 0 Comments Continue Reading

Wolfram — Writings Dec 2023 khoitsma Calculus, General, Mathematics, Science 0 Comments ‘The Concept of the Ruliad’‘Expression Evaluation and Fundamental Physics’ Continue Reading

Feynman — The Relation of Physics to Other Sciences Dec 2023 khoitsma Calculus, General, Mathematics, Science 0 Comments ‘The Relation of Physics to Other Sciences’‘The Value of Science’‘Bonus’ Continue Reading

Engineering Math Nov 2023 khoitsma Engineering, Kids (middle school and up), Mathematics, Mental Math 0 Comments “Often while working, an arithmetical answer is needed — exact is sometimes required, approximate is often acceptable — maybe the basis of a decision or a path forward is based on a few quick calculations, with more rigorous calculations to follow Multiply by 11 (or 12). Just write down the answer ! Pascal’s Triangle Aliquot Parts Continue Reading

Convolution as seen in Virtual Work Nov 2023 khoitsma Calculus, Engineering, Jupyter, Mathematics, Plotly, Python, Sympy 0 Comments Is this convolution linear or nonlinear? Continue Reading

Photomath and Slide Rule Competition Oct 2023 khoitsma General, Mathematics, Software 0 Comments Can you work this problem by hand? Continue Reading