ztrans - Z transform
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Calling Sequence
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ztrans(f, n, z)
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Parameters
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f
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expression
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n
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name
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z
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name
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Description
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The function ztrans finds the Z transformation of f(n) with respect to z. Formally,
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ztrans recognizes and specially handles a large class of expressions, and only resorts to using the definition to calculate the transformation if the given expression has an unknown form. If the Z transform of the given expression cannot be found in a closed form, then the left-hand side of the formal definition is returned, rather than the right-hand side.
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The functions referred to in the literature as Delta and Step may be simulated in this function as charfcn[0](...) and Heaviside(...), respectively.
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Examples
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