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convert/pwlist - convert a piecewise function to a list
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Calling Sequence
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convert(piecewise, pwlist, x)
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Parameters
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piecewise
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-
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piecewise expression
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pwlist
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-
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literal name
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x
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-
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(optional) name; specify variable
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Description
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A piecewise expression, such as ![piecewise(cond1, f[1], cond2, f[2], ` `, `...`)](/support/helpjp/helpview.aspx?si=9280/file03684/math56.png) , is converted into an ordered list ![[f[1], t[1], f[2], t[2], `...`, f[n], t[n], f[n+1]]](/support/helpjp/helpview.aspx?si=9280/file03684/math58.png) which represents the piecewise-defined function:
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![f[i]*when*t[i-1] < x and x < t[i], i = 1, 2, () .. (), n+1.](/support/helpjp/helpview.aspx?si=9280/file03684/math64.png)
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Here, ![t[0] = -infinity](/support/helpjp/helpview.aspx?si=9280/file03684/math67.png) and ![t[n+1] = infinity](/support/helpjp/helpview.aspx?si=9280/file03684/math69.png) are implicit.
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The variable x can be stated as an extra argument to the convert function. If x is not stated then the variable name is deduced if there is exactly one name appearing in the expression.
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