HP Prime Graphing NW280AAABA manual RowDim Returns the number of rows of a matrix, Example Gives

rowAdd Given a matrix and two integers, returns the matrix obtained from the given matrix after the row indicated by the second integer is replaced by the sum of the rows indicated by the two integers.

rowAdd(Matrix, Integer1, Integer2)

Example:

⎛	1 2	⎞
⎜		⎟	returns
rowAdd ⎜	3 4	, 1, 2⎟
⎜	5 6	⎟
⎝		⎠

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rowDim Returns the number of rows of a matrix.

rowDim(Matrix)

Example:

⎛	1 2 3	⎞	gives 2
rowDim ⎜		⎟
⎝	4 5 6	⎠

rowSwap Given a matrix and two integers, returns the matrix obtained from the given matrix after swapping the two rows indicated by the two integers.

rowSwap(Matrix,Integer1,Integer2)

Example:

⎛	1 2	⎞
⎜		⎟	returns
rowSwap ⎜	3 4	, 1, 2⎟
⎜	5 6	⎟
⎝		⎠

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rsolve Given an expression defining a recurrence relation, a variable, and an initial condition, returns the closed form solution (if possible) of the recurrent sequence. Given three lists, each containing multiple items of the above nature, solves the system of recurrent sequences.

rsolve(Expr, Var, Condition) or rsolve(List1, List2, List3)

Example:

rsolve(u(n+1)=2*u(n)+n,u(n),u(0)=1) returns [-n+2*2n-1]

414 Functions and commands