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Process Control: Modeling, Design, and Simulation by B. Wayne Bequette

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M1.4. Complex Variables

Both i and j represent the imaginary number by default:

» i
ans =
        0 + 1.0000i
» sqrt(-3)
ans =
        0 + 1.7321i

Note that these variables (i and j) can be redefined (as the index in a for loop, for example).

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