HP NW280-200X User Manual page 357

hyperbola
iabcuv
ibasis
icontent
icosahedron
id
identity
iegcd
IF
IFERR
IFTE
Functions and commands
With three points (F1, F2, and M) as arguments, draws an
hyperbola with foci at F1 and F2 that passes though M. With
two points and a real (F1, F2, and a) as arguments, draws an
hyperbola with foci at F1 and F2 that passes through point M
such that |MF1–MF2|=2a. With one second degree
polynomial p(x,y) as argument, draws the hyperbola defined
when the polynomial is set to equal 0.
hyperbola(Focus(F1),Focus(F2),(Pnt(M) or
Real(a)))
Returns [u,v] such as au+bv=c for three integers a,b, and c.
Note that c must be a multiple of the greatest common divisor
of a and b for there to be a solution.
iabcuv(Intg(a),Intg(b),Intg(c))
Returns the basis of the intersection of two vector spaces.
ibasis(Lst(Vect,..,Vect),Lst(Vect,..,Vect))
Returns the greatest common divisor of the integer coefficients
of a polynomial.
icontent(Poly,[Var])
Draws an icosahedron with center A, vertex B and such that
the plane ABC contains one vertex among the five nearest
vertices from B.
icosahedron(Pnt(A),Pnt(B),Pnt(C))
Returns the solution to the identity function for an expression.
id(Seq)
Returns the identity matrix of dimension n.
identity(Intg(n))
Returns the extended greatest common divisor of two integers.
iegcd(Intg,Intg)
Used in programming to begin a conditional statement.
Executes sequence of commands1. If an error occurs during
execution of commands1, execute sequence of commands2.
Otherwise, execute sequence of commands3.
IFERR commands1 THEN commands2 [ELSE
commands3] END;
If a condition is satisfied, returns Expr1, otherwise returns
Expr2.
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