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Prime 7 symbolic bug of solve 2

ttokoro
17-Peridot

Prime 7 symbolic bug of solve 2

Is this a Prime 7's symbolic bug of solve? The answer I want to get is shown as follows. 

image.pngimage.pngimage.pngimage.png

1 ACCEPTED SOLUTION

Accepted Solutions
Werner_E
24-Ruby IV
(To:ttokoro)

Guess you get a different result if you omit the modifier "float,4", right?

The symbolic engine in P7 was changed by PTC from MuPad to Axiom for business reasons (to avoid having to pay license fees to Mathworks) and not because it would be an improvement. So its no surprise we see so many errors and incapabilities of this new engine posted here in the forum since the release of P7. There were also posted bugs in Axiom which were detected in P6 and I don't know if any of them already got fixed in P7.

As usual you can either just live with this inability,  or find a workaround and, if you are very optimistic and feel it could help, you may open a support case at PTC and report it, hoping the engine will be improved in a future version.

In MC15 you get the solution you expect, but even without the "float" modifier it will only give a numeric solution. As you can see in the pic it needs a lot of help to be able to calculate the exact solution:

Werner_E_0-1616902878939.png

 

 

 

View solution in original post

2 REPLIES 2
Werner_E
24-Ruby IV
(To:ttokoro)

Guess you get a different result if you omit the modifier "float,4", right?

The symbolic engine in P7 was changed by PTC from MuPad to Axiom for business reasons (to avoid having to pay license fees to Mathworks) and not because it would be an improvement. So its no surprise we see so many errors and incapabilities of this new engine posted here in the forum since the release of P7. There were also posted bugs in Axiom which were detected in P6 and I don't know if any of them already got fixed in P7.

As usual you can either just live with this inability,  or find a workaround and, if you are very optimistic and feel it could help, you may open a support case at PTC and report it, hoping the engine will be improved in a future version.

In MC15 you get the solution you expect, but even without the "float" modifier it will only give a numeric solution. As you can see in the pic it needs a lot of help to be able to calculate the exact solution:

Werner_E_0-1616902878939.png

 

 

 

View solution in original post

Still a better numeric solver than symbolic.

 

There's always root()

Fred_Kohlhepp_0-1616938682662.png

 

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