zpk2tf
zpk2tf(z, p, k)
Try it yourself:
| $1 |
zpk2tf([1, 2], [-1, -2], 1)
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| $2 |
zpk2tf([1, 2], [-1, -2])
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| $3 |
zpk2tf([1 - 3i, 2 + 2i], [-1, -2])
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