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12-Amethyst

## find roots and assign

Hello,

I need to find roots of a periodic equation by making initial guesses of x and assign the derived roots in "a". But, Mathcad is saying " the value must be a scalar". What does "scalar" in this case and how can I solve this?  I also need to sort "a" after assigning.

Thank you very much,

Faisal

1 ACCEPTED SOLUTION

Accepted Solutions
24-Ruby V
(To:fahmed-2)

Its always better to post the worksheet itself rather than just a picture.

Worksheet in Format P5 attached

10 REPLIES 10
24-Ruby V
(To:fahmed-2)

Its always better to post the worksheet itself rather than just a picture.

Worksheet in Format P5 attached

12-Amethyst
(To:Werner_E)

I tried it but did not work

24-Ruby V
(To:fahmed-2)

See my approach in the answer above

12-Amethyst
(To:Werner_E)

Thank you very much for your help. Can you please direct as what does "scalar" and "vector" means in Mathcad language. what I understand is one is in a matrix form and the other isn't. You can also direct me to any previously discussed topic about this.

24-Ruby V
(To:fahmed-2)

@fahmed-2 wrote:

Thank you very much for your help. Can you please direct as what does "scalar" and "vector" means in Mathcad language. what I understand is one is in a matrix form and the other isn't. You can also direct me to any previously discussed topic about this.

A scalar is a simple value, like 15.6.

A vector is a n x 1 matrix, a column vector.

Obviously vector elements are not allowed in the "root" command which made is necessary to create our own "Root" command which does 😉

12-Amethyst
(To:Werner_E)

Thank you again

12-Amethyst
(To:Werner_E)

I am very close in getting my solution but I am having an issue. the roots that I am getting has some repetitive and negative roots. My solution only involves positive non-repetitive roots. I have tried this approach but not working. Could please see to it. Thank you. My Mathcad version is 4.0

24-Ruby V
(To:fahmed-2)

This should help:

Worksheet in Format P4 attached

12-Amethyst
(To:Werner_E)

Thank you very much, it worked. I truly appreciate your concern and time for this,

20-Turquoise
(To:Werner_E)