Complex analysis

  • Impedance can be complex!
    problem

    Impedance can be complex!

    Age
    16 to 18
    Challenge level
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    Put your complex numbers and calculus to the test with this impedance calculation.
  • Arrow Arithmetic 1
    problem

    Arrow arithmetic 1

    Age
    14 to 16
    Challenge level
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    The first part of an investigation into how to represent numbers using geometric transformations that ultimately leads us to discover numbers not on the number line.