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-MFra-21-Topaz II
21-Topaz II
March 11, 2016
Solved

Better simplification

  • March 11, 2016
  • 3 replies
  • 2194 views

Hello everyone. There is someone who kindly can tell me what to do to get a better simplification?

simplifymax.jpg

Best answer by Werner_E

You are symbolically evaluating an equation, not a math expression, and so the result can only be TRUE or FALSE, in Mathcad thats 1 or 0.

The rectangular command applies to the result of the whole calculation (0 or 1).

So if Q=1/3 is TRUE (1) we have  Re(1)+Im(1)*j=1+0j=1 -> that's TRUE

If Q=1/3 is FALSE (0) we have Re(0)+Im(0)*j=0+0j=0 -> that's FALSE.

So Mathcad is perfectly right - it gives you the truth value as commanded in rectangular form.

What you expected to see can be easily achieved by "assume, omega.0=real" or, if that applies, by "assume, ALL=real".

Sometimes a "simplify" or "simplify, max" is additionally needed and ever so often muPad refuses to give us the results we expect and need - bad luck.

Regards,

Werner

3 replies

A
AlanStevens19-Tanzanite
19-Tanzanite
March 11, 2016

limit.PNG

Don't ask me why!!

Alan

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-MFra-21-Topaz IIAuthor
21-Topaz II
March 11, 2016

Thanks for the tip!

If , however, I write the expression as in the figure, mathcad gives me an unwanted response. You can do something to get the correct solution?

Thank you very much again.

F. M.

simplifymax.jpg

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-MFra-21-Topaz IIAuthor
21-Topaz II
March 11, 2016

Done! thanks anyway!

simplifymax.jpg

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-MFra-21-Topaz IIAuthor
21-Topaz II
March 11, 2016

Thanks for the tip!

If , however, I write the expression as in the figure, mathcad gives me an unwanted response. You can do something to get the correct solution?

Thank you very much again.

F. M.

simplifymax.jpg

W
Werner_E25-Diamond IAnswer
25-Diamond I
March 11, 2016

You are symbolically evaluating an equation, not a math expression, and so the result can only be TRUE or FALSE, in Mathcad thats 1 or 0.

The rectangular command applies to the result of the whole calculation (0 or 1).

So if Q=1/3 is TRUE (1) we have  Re(1)+Im(1)*j=1+0j=1 -> that's TRUE

If Q=1/3 is FALSE (0) we have Re(0)+Im(0)*j=0+0j=0 -> that's FALSE.

So Mathcad is perfectly right - it gives you the truth value as commanded in rectangular form.

What you expected to see can be easily achieved by "assume, omega.0=real" or, if that applies, by "assume, ALL=real".

Sometimes a "simplify" or "simplify, max" is additionally needed and ever so often muPad refuses to give us the results we expect and need - bad luck.

Regards,

Werner

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-MFra-21-Topaz IIAuthor
21-Topaz II
March 12, 2016

Thank you very much. ...

The solution was so simple ...

trying again and again we'd all arrived ....

Greetings

F. M.

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