(3)

Move the cursor up two positions by using

 

 

. Then press

.

 

The second row will disappear.

 

 

 

 

 

(4)

Press

. A row of three zeroes appears in the second row.

 

(5)

Press

. The first column will disappear.

 

 

 

 

(6)

Press @+COL@. A column of two zeroes appears in the first column.

 

(7)

Press

 

to move to position (3,3).

 

(8)

Press

. This will place the contents of cell

(3,3) on the

stack,

 

although you will not be able to see it yet.

Press

to return to normal

 

display. The number 9, element (3,3), and the full matrix entered will be

 

available in the stack.

 

——

 

@-ROW

Simple operations with vectors

 

 

To illustrate@GOTO@RW@operations with vectors we will use the vectors`u2, u3, v2, and

v3, stored in an earlier exercise. Also, store vector A=[-1,-2,-3,-4,-5] to be

used in the following exercises.

 

 

 

 

 

Changing sign

 

 

 

 

 

To change-theSTK@@sign3of@@OK@@a

vector3@@OK@@@@OK@@use the key

, e.g.,

 

 

 

 

 

 

 

 

Addition, subtraction

Addition and subtraction of vectors require that the two vector operands have the same length:

\

Page 8-5

 

Page 114
Image 114
HP 49g manual Simple operations with vectors, Addition, subtraction, Used in the following exercises