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Apr 12, 2020
12:28 AM

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Apr 12, 2020
12:28 AM

Help; Absolute values of elements of a vector

Help, what am I doing wrong here. Mathcad 15 file and pdf attached.

Thanks much

Reg

Reg

Solved! Go to Solution.

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Apr 12, 2020
03:11 AM

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11 REPLIES 11

Apr 12, 2020
03:11 AM

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Apr 12, 2020
03:11 AM

Apr 12, 2020
03:37 AM

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Apr 12, 2020
03:37 AM

👍

Thanks. I didn't even notice there were two |x| operators. That fixed it.

Reg

Apr 12, 2020
07:03 AM

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Apr 12, 2020
07:03 AM

@regcurry wrote:

👍

Thanks. I didn't even notice there were two |x| operators. That fixed it.

Its the same symbol which can be interpreted in two different ways ("Absolute Value" or "Square Matrix Determinant").

Normally Mathcad tries to automatically detect what you mean and interprets accordingly, but sometimes it can't.

You can change the meaning of the operator yourself by __right-clicking__ the expression and choosing the appropriate:

Apr 12, 2020
07:19 AM

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Apr 12, 2020
07:19 AM

👍👍

Reg

Apr 12, 2020
08:12 AM

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Apr 12, 2020
08:12 AM

Its the same symbol which can be interpreted in **three** different ways:

- Absolute Value
- Square Matrix Determinant

Apr 12, 2020
09:58 AM

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Apr 12, 2020
09:58 AM

3. The cardinality of a set (the number of elements in a set).

Luc

Apr 12, 2020
10:16 AM

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Apr 12, 2020
10:16 AM

norm of vector

Apr 12, 2020
03:52 PM

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Apr 12, 2020
03:52 PM

👍

I have used it for that in the distant past. I was just assuming the vectorize operation in Mathcad was smarter than me...it usually is.🤣😂

I have used it for that in the distant past. I was just assuming the vectorize operation in Mathcad was smarter than me...it usually is.🤣😂

Reg

Apr 12, 2020
04:55 PM

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Apr 12, 2020
04:55 PM

I considered that (norm of a vector), but have to disagree, because in essence it's the same as 'absolute value'. And also the same as 'modulus of a complex value', by the way.

The operation in all cases is to take the root of the sum of the squares of all 'elements' provided through the argument of the operator.

Luc

Apr 12, 2020
03:52 PM

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Apr 12, 2020
03:52 PM

👍

Reg

Apr 12, 2020
03:17 AM

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