HP Prime Graphing NW280AAABA FMaxExpr,Var, FMax-x2+2*x+1,x gives, FMinExpr,Var, FrootRatPoly

fMax Given an expression in x, returns the value of x for which the expression has its maximum value. Given an expression and a variable, returns the value of that variable for which the expression has its maximum value.

fMax(Expr,[Var])

Example:

fMax(-x^2+2*x+1,x) gives 1

fMin Given an expression in x, returns the value of x for which the expression has its minimum value. Given an expression and a variable, returns the value of that variable for which the expression has its minimum value.

fMin(Expr,[Var])

Example:

fMin(x^2-2*x+1,x) gives 1

format Returns a real number as a string with the indicated format (f=float, s=scientific, e=engineering).

format(Real, String)

Example:

format(9.3456,"s3") returns 9.35

fracmod For a given integer n (representing a fraction) and an integer p (the modulus), returns the fraction a/b such that n=a/b(mod p).

fracmod(Integern, Integerp)

Example:

fracmod(41,121) gives 2/3

froot Returns a vector containing the roots and poles of a rational polynomial. Each root or pole is followed by its multiplicity.

froot(RatPoly)

Example:

⎛	5--	–------2-----	⋅--x---	4--	+-----x---	3⎞	returns [0,3,1,2,3,-1]
froot ⎜ x------				---		--⎟
⎝		x – 3				⎠

392 Functions and commands