1. Mathematics
2. Calculus and Analysis
3. Complex Analysis
4. 28698

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1. Classify the given numbers as real and rational, real and irrational, or complex.

2. a. Select any irrational number, and turn it into a rational number by using addition, subtraction, multiplication, division, or exponentiation.

b. Select any imaginary number (of the form "a + bi" where a and b are non-zero real numbers), and turn it into a real number by using addition, subtraction, multiplication, division, or exponentiation.