Skip to main content
V
VG_107148688-Gravel
8-Gravel
January 29, 2024
Solved

Defining variables for solve

  • January 29, 2024
  • 3 replies
  • 1778 views

I have defined the more than one values for a variable.

The answer 0.21 mm is wrong (0.1mm is correct value).

Kindly figure out why the answer is wrong.

 

Regards,

GSVP

Mathcad.JPG

Best answer by terryhendicott

Hi,

You need to do element by element arithmetic not matrix arithmetic.

Math | Operation and Symbols | Operators |  in the lower right hand corner a V with an arrow over it.

select the whole equation right hand side and apply the operator.

Capture.JPG

3 replies

T
21-Topaz II
terryhendicott21-Topaz IIAnswer
21-Topaz II
January 29, 2024

Hi,

You need to do element by element arithmetic not matrix arithmetic.

Math | Operation and Symbols | Operators |  in the lower right hand corner a V with an arrow over it.

select the whole equation right hand side and apply the operator.

Capture.JPG

    V
    VG_107148688-GravelAuthor
    8-Gravel
    January 30, 2024

    HI,

    Sry to bother can you save it Prime8 version

     

    Thanks

    GSVP

    T
    21-Topaz II
    terryhendicott21-Topaz II
    21-Topaz II
    January 30, 2024

    Prime5 that can be read by Prime8

    F
    FredLusk14-Alexandrite
    14-Alexandrite
    January 29, 2024

    I would like to point out that there is an easier and better way to define W1.  Rather than manually enter 9.81 for the gravitational acceleration, Mathcad includes g as a constant.  So, I suggest you do this:

    MCP.png

    This way, your mass data is entered as data (rather than just a number) and you let Mathcad handle the math and units.

      V
      VG_107148688-GravelAuthor
      8-Gravel
      January 30, 2024

      Thank you fred for the Tip

      I will use in future

       

      W
      Werner_E25-Diamond I
      25-Diamond I
      January 29, 2024

      Terry already said that 'vectorization' does the magic here.

       

      Its often a good idea to turn the calculations into functions which expect single scalars as arguments and after defining the input vectors call this function vectorized:

      Werner_E_0-1706557863407.png

       

      I wouldn't necessarily vote for it now, but you can also execute the vectorization in the function and then don't have to think about vectorization when calling it:

      Werner_E_1-1706557977492.png

       

       

        Terms & ConditionsCookie settingsAccessibility statement