HP Prime Graphing NW280AAABA manual FsolveExpr,Var,Guess or Interval,Method, FunctiondiffFnc

fsolve Returns the numerical solution of an equation or a system of equations. With the optional third argument you can specify a guess for the solution or an interval within which it is expected that the solution will occur. With the optional fourth argument you can name the iterative algorithm to be used by the solver.

fsolve(Expr,Var,[Guess or Interval],[Method])

Example:

fsolve(cos(x)=x,x,-1..1,bisection_solver) gives [0.739085133215]

function_diff Returns the derivative function of a function (as a mapping).

function_diff(Fnc)

Example:

function_diff(sin) gives (_x)→cos(_x)

gauss Given an expression followed by a vector of variables, uses the Gauss algorithm to return the quadratic form of the expression written as a sum or difference of squares of the variables given in the vector.

gauss(Expr,VectVar)

Example:

gauss(x^2+2*a*x*y,[x,y]) gives (a*y+x)^2+(- y^2)*a^2

GF Creates a Galois Field of characteristic p with p^n elements.

GF(Integerp, Integern)

Example:

GF(5,9) gives GF(5,k^9-k^8+2*k^7+2*k^5-k^2+2*k- 2,[k,K,g],undef)

Functions and commands 393