HP Prime Graphing NW280AAABA manual Head1,2,3 gives, HeavisideReal, Heaviside1 gives, Hyp2expExpr

head Returns the first element of a given vector, sequence or string.

head(Vector) or head(String) or head(Obj1, Obj2,…)

Example:

head(1,2,3) gives 1

Heaviside Returns the value of the Heaviside function for a given real number (i.e. 1 if x>=0, and 0 if x<0).

Heaviside(Real)

Example:

Heaviside(1) gives 1

hyp2exp Returns an expression with hyperbolic terms rewritten as exponentials.

hyp2exp(Expr)
Example:
	1
	exp(x) + exp-----------(--x---)-
hyp2exp(cosh(x)) returns	2
	-----------------------------------------

iabcuv 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(Intgra, Intgrb, Intgrc)

Example:

iabcuv(21,28,7) gives [-1,1]

ibasis Given two matrices, interprets them as two vector spaces and returns the vector basis of their intersection.

ibasis(Matrix1, Matrix2)

Example:

⎛	1 0 0	,	1 1 1	⎞	returns [-1,-1,0]
ibasis ⎜				⎟
⎝	0 1 0		0 0 1	⎠

icontent Returns the greatest common divisor of the integer coefficients of a polynomial.

icontent(Poly,[Var])

Example:

icontent(24x^3+6x^2-12x+18) gives 6

Functions and commands 395