Problem6:Find the cross product and the inner product between the vectors (i+j) and (i-j+k). |
SOLUTION:
| Piece of cacke... |
> i := [1,0,0]: j := [0,1,0]: k := [0,0,1]:
| the crossproduct is, |
> crossprod( i+j, i-j+k );
[1, -1, -2]
| and the dotprod is, |
> dotprod(i+j,i-j+k);
0
| gosh this is soooo easy.... try doing it by hand using the distributivity property for the dot and cross products. Good exercise... DO IT! |