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24-Ruby IV
ValeryOchkov24-Ruby IV
24-Ruby IV
April 24, 2019
Question

Why not!? Can you show the symbolic solution?

  • April 24, 2019
  • 2 replies
  • 4669 views

I show to my sdudents the equations sin a + sin a = tan a

99% say that it is not correct? But 1%...

See please

EGE.pngEGE-Solve.png

2 replies

V
24-Ruby IV
ValeryOchkov24-Ruby IVAuthor
24-Ruby IV
April 24, 2019

nd what about Mathcad/MuPAD

EGE-Solve-Math.png

V
24-Ruby IV
ValeryOchkov24-Ruby IVAuthor
24-Ruby IV
April 24, 2019

EGE-Solve-root.png

L
LucMeekes23-Emerald IV
23-Emerald IV
April 28, 2019

Your text "sin(a)+sin(a)=tan(a)" shows different from you mathcad sheet picture.

Because it's more intrigueing I tried the latter first:

LM_20190428_symbolic.png

Note that there are four primary solutions to this problem. (see the float results). I expanded the smallest real solution up to 2 of 5 pages..

I guess the size is the reason why Prime will not give you the symbolic result...?

 

Success!
Luc

    W
    Werner_E25-Diamond I
    25-Diamond I
    April 28, 2019

    In Mathcad 15 all symbolic results are equally wide ("only" three page widths). Using the modifier "simplify,max" the result gets four pages width.

     

    V
    24-Ruby IV
    ValeryOchkov24-Ruby IVAuthor
    24-Ruby IV
    April 29, 2019

    OK!

    What about the second "bug": 30deg+30deg+30deg=180deg?

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