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ti-nspire

Result z*conj(z) with z complex - TI-Nspire CAS

When I write z*conj(z) on TI-Nspire CAS, the result is z^2 (true only if z is real) instead of |z|^2. Is there a way to get the right result |z|^2?

Thank you very much.

Solution

  • All undefined variables are treated as real variables. Therefore z will be seen as a real (even in rectangular mode).

    The alternative is to use:

    z := a + b*@i
z*conj(z)

    which gives the result a^2+b^2.