HP Prime Graphing NW280AAABA manual ZerosExpr,Var or zerosExpr1, Expr2,…,Var1, Var2,…

Zeros With an expression as argument, returns the real zeros of the expression; that is, the solutions when the expression is set equal to zero.

With a list of expressions as argument, returns the matrix where the rows are the real solutions of the system formed by setting each expression equal to zero.

zeros(Expr,[Var]) or zeros({Expr1, Expr2,…},[{Var1, Var2,…}])

Example:

zeros(x^2-4) returns [-2 2]

Complex Solve Returns a list of the complex solutions to a polynomial equation or a set of polynomial equations.

csolve(Eq,[Var])

or

csolve({Eq1, Eq2,…}, [Var])

Example:

csolve(x^4-1=0, x) returns {1 -1 -i i}

Complex Zeros With an expression as argument, returns a vector containing the complex zeros of the expression; that is, the solutions when the expression is set equal to zero.

With a list of expressions as argument, returns the matrix where the rows are the complex solutions of the system formed by setting each expression equal to zero.

cZeros(Expr,[Var]

or

cZeros({Expr1, Expr2,…},[{Var1, Var2,…}])

Example:

cZeros(x^4-1) returns [1 -1 -i i]

Numerical Solve Returns the numerical solution of an equation or a system of equations.

nSolve(Eq,Var) or nSolve(Expr, Var=Guess)

Example:

nSolve(cos(x)=x,x=1.3) gives 0.739085133215

Functions and commands 331