Friday, February 1, 2019

radicals - How should I calculate the square root of a complex number using a Casio 991EX?

With Casio 991EX how should I calculate the square root of a complex number? It says Math error even though is set in COMPLEX mode

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analysis - Injection, making bijection

I have injection $f \colon A \rightarrow B$ and I want to get bijection. Can I just resting codomain to $f(A)$? I know that every function i...