Hp 49g Graphing Calculator Manuel d'utilisateur télécharger pdf (Page 161)

Dot product

The dot product of two vectors of equal dimensions is the smu of the

products of each corresponding pair of elements. The dot product is also

Imown as the inner or scalar product.

To find the dot product of [2 -3 4] and [-1 2 8]:

1. Press 0(MTH) to select the MATH menu.

2. Press OK or to select the VECTOR menu.

3. Press ® to highlight the DOT command and press OK or (ENTER).

4. Press 00 to enter a pair of square brackets to enclose the first

vector.

5. Enter2 0O3©0O4.

6. Press ® to move your cursor outside the square brackets, thereby

indicating that the first vector is complete.

7. Pi-ess 0 O to indicate the end of the first argument.

8. Press 0 0 to enter a pair of square

brackets to enclose your second vector.

9. Enter 1000200 8.

10. Press (ENTER) to return the dot product of

the two vectors, in this case, 24.

fiUD KVZ HEK ft= 'K'

EHDHEi

____________

: D0TCC2 i 43..C-1 2 81)

HEaEiisnaEaKiHBEi

Cross product

For two vectors [a b c] and [d ef], the cross product is [(bf- ce) (cd - af)

(ae - bd)]. The cross product of two vectors is also known as the vector

product or outer product.

To find the cross product of [2 3 4] and [15 6]:

1. Press 0(MTH) to select the MATH menu.

2. Press OK or (STER) to select the VECTOR menu.

3. Press @ twice to highlight the CROSS command and press OK or (PffER).

4. Enter the two vectors, separating them

with a comma.

5. Press (ENT0 to return the cross product of

RHD KV2 HEK F,=

EHdHEl

_________

the two vectors, in this case, [-2 -8 7].

:CR0SS(C2 3 4W1 5 61)

C-2 -8 71

Vectors, lists, arrays, and matrices

Page 8-5

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Hp 49g Graphing Calculator Manuel d'utilisateur Page 161

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