HP 48gII Graphing Calculator Manual do Utilizador descarregar pdf (Página 294)

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101

Page 9-19

We can now use function EXPAND (in the ALG menu) to expand this

expression:

Thus, the equation of the plane through point P

(2,3,-1) and having normal

vector N = 4i+6j+2k, is 4x + 6y + 2z – 24 = 0. In RPN mode, use:

[2,3,-1] ` ['x','y','z'] ` - [4,6,2] DOT EXPAND

Row vectors, column vectors, and lists

The vectors presented in this chapter are all row vectors. In some instances, it

is necessary to create a column vector (e.g., to use the pre-defined statistical

functions in the calculator). The simplest way to enter a column vector is by

enclosing each vector element within brackets, all contained within an

external set of brackets. For example, enter:

[[1.2],[2.5],[3.2],[4.5],[6.2]] `

This is represented as the following column vector:

In this section we will showing you ways to transform: a column vector into a

row vector, a row vector into a column vector, a list into a vector, and a

vector (or matrix) into a list.

We first demonstrate these transformations using the RPN mode. In this mode,

we will use functions OBJ, LIST, ARRY and DROP to perform the

transformation. To facilitate accessing these functions we will set system flag

117 to SOFT menus (see Chapter 1). With this flag set, functions OBJ,

ARRY, and LIST will be accessible by using „° @)TYPE!. Functions

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