
erf
Returns the oating point value of the error function at x=a.
erf(a)
erfc
Returns the value of the complementary error function at x=a.
erfc(a)
Ei
Returns the exponential integral of an expression.
Ei(Expr)
Si
Returns the sine integral of an expression.
Si(Expr)
Ci
Returns the cosine integral of an expression.
Ci(Expr)
CAS menu
Press to open the Toolbox menus (one of which is the CAS menu). The functions on the CAS menu are
those most commonly used. Many more functions are available. See Ctlg menu on page 416. Note that the
Geometry functions appear on the App menu.
The result of a CAS command may vary depending on the CAS settings. The examples in this chapter assume
the default CAS settings unless otherwise noted.
364 Chapter 22 Functions and commands
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