HP Prime Graphing NW280AAABA manual Residue Returns the residue of an expression at a value

residue Returns the residue of an expression at a value.

residue(Expr, Var, Value)

Example:

residue(1/z,z,0) returns 1

restart Purges all the variables.

restart(NULL)

resultant Returns the resultant (i.e. the determinant of the Sylvester matrix) of two polynomials.

resultant(Poly1, Poly2, Var)

Example:

resultant(x^3+x+1, x^2-x-2,x) returns -11

revlist Reverses the order of the elements in a list or vector.

revlist(List) or revlist(Vector)

Example:

revlist([1,2,3]) returns [3,2,1]

romberg Uses Romberg’s method to return the approximate value of a definite integral.

romberg(Expr, Var, Val1, Val2)

Example:

romberg(exp(x^2),x,0,1) gives 1.46265174591

row Given a matrix and an integer n, returns the row n of the matrix. Given a matrix and an interval, returns a vector containing the rows of the matrix indicated by the interval.

row(Matrix, Integer) or row(Matrix, Interval)

Example:

⎛	1 2 3	⎞
⎜		⎟	returns [4,5,6]
row ⎜	4 5 6	, 2⎟
⎜	7 8 9	⎟
⎝		⎠

Functions and commands 413