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12-Amethyst

## Isolate

hi, how can I isolate V?

It give me a answer in matrix but I want it in m/s.

1 ACCEPTED SOLUTION

Accepted Solutions
13-Aquamarine
(To:LucMeekes)

...and in Prime:

Viktor
3 REPLIES 3
23-Emerald I
(To:kenan2)

You're trying to symbolically solve this. NOTE that the symbolic processor of Mathcad (and Prime) does NOT know about units. It treats your units m, s and kg as unknown variables, and also the gravitation g. That's why it produces answers in terms of root of kg and root of g.

One way of obtaining a simple answer is to use the root function:

Not that it does not give you units in the result, even though it's the result of a pure numeric approximation.

If you want to work symbolically, then FIRST solve your symbolic problem, then if necessary select the symbolic solution you prefer, then provide the data:

Success!
Luc

13-Aquamarine
(To:LucMeekes)

...and in Prime:

Viktor
24-Ruby IV
(To:kenan2)

Apart from using the symbolic "solve" in conjunction with "assume, ALL>0" and the "root command you could also use a solve block.

Note that root and solve block are numeric methods which is the reason that you have to assign m a value (or label m as unit) - otherwise the numerics will throw an error.

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