3 results authored by Christoph Walti - search across all users.
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Question in Christoph's workspace
Compute a table of values for a quadratic function. A JSXgraph (the graph paper) plot shows the curve going through the entered values. The student input is now disconnected from the graph so that they slide the points usually after they input the values and the answer fields are not updated.
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Question in Christoph's workspace
Finding the modulus and argument (in radians) of four complex numbers; the arguments between $-\pi$ and $\pi$ and careful with quadrants!
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Question in Christoph's workspace
Find the determinant and inverse of three $2 \times 2$ invertible matrices.