Matrix Input Order and Why the Product Changes
Enter rows left to right. AB is not BA, and a column-wise paste is the transpose.
Category Math Tutorials
Algebra, geometry, trig how-tos.
Degrees Versus Radians Before You Type an Angle
Sine of 30 degrees is one half. The same digits in radian mode are a different angle.
Using an Algebra Calculator Without Skipping the Setup
Write and define the equation first. Substitute the solver's root back into the original statement.