Turn on suggestions

Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.

Showing results for

Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.

Showing results for

- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Mute
- Printer Friendly Page

May 13, 2022
07:46 PM

- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Notify Moderator

May 13, 2022
07:46 PM

Vector

When I try to calculate the cross product of two three element vectors I get an error message on the first vector

"This value must be a 3-element vector". I am using Mathcad Prime 8.0.0.0. I have tried the same thing on 7.0.0.0. I have changed the vector and matrix index Origin to from 0 to 1.

Jack Smith, Katy TX

`

Solved! Go to Solution.

1 ACCEPTED SOLUTION

Accepted Solutions

May 13, 2022
09:07 PM

- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Notify Moderator

May 13, 2022
09:07 PM

Hi,

Vectors are matrices with one column and many rows.

Supplied to the cross product in your sheet are row matrices with one row and many columns,

Simply transpose the inputs.

Cheers

Terry

2 REPLIES 2

May 13, 2022
09:07 PM

- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Notify Moderator

May 13, 2022
09:07 PM

Hi,

Vectors are matrices with one column and many rows.

Supplied to the cross product in your sheet are row matrices with one row and many columns,

Simply transpose the inputs.

Cheers

Terry

May 13, 2022
09:26 PM

- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Notify Moderator

May 13, 2022
09:26 PM

Terry, Many thanks for the answer to my question and also for the surreptitious tip on converting the single row, many column matrix that doesn't take a lot of space to the single column many row matrix.

Jack