HP Prime Graphing NW280AAABA manual CAS menu, Algebra

CAS menu

Press Dto 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”, beginning on page 378.

Note that the Geometry functions appear on the App menu. They are described in “Geometry functions and commands”, beginning on page 165.

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.

Algebra

Simplify Returns an expression simplified.

simplify(Expr)

Example:

simplify(4*atan(1/5)-atan(1/239))yields(1/4)*pi

Collect Returns a polynomial or list of polynomials factorized over the field of the coefficients.

collect(Poly or LstPoly)

Example:

collect(x^2-4) gives (x-2)*(x+2)

Expand Returns an expression expanded.

expand(Expr)

Example:

expand((x+y)*(z+1))gives y*z+x*z+y+x

Factor Returns a polynomial factorized.

factor(Poly)

Example:

factor(x^4-1) gives (x-1)*(x+1)*(x^2+1)

324 Functions and commands