## 5790 Reputation

15 years, 309 days

## Cool...

Funnily enough I just came across that tip starting maple and was going to give it a try later on.

## It's not a positive thing for the softwa...

If someone's trying to sell you a product, you wouldn't want to hear about all the defects it has would you?

That's probably one of the main reasons Maple doesn't reveal it's list of bugs.

Imagine you're going out to buy a new car and the salesman tells you that if you push real hard on the brakes the lines break or if you sit at exactly 107 kph for 10 minutes the electronics fail, or the airbags might be faulty and the door screws may come loose after 50,000 km.  You'd probably not be buying that car, anyways I think you get my point.

## mod2 and varried last variable...

arghh can't get crtl-v to work, don't want to have to type it all out so I'll short form it

I don't know why it hangs but maybe some testing we can figure out why it doesn't work.

If I change the last variable from c^4 to c I get

(b2+ab+a2)c2+(b2a+a2b+1)c+a4+a2b2+b4

... to c^2

(b2+ab+a2+1)c2+(b2a+a2b)c+a4+a2b2+b4

and to c^3

returns original

then c^4 it hangs.  It doesn't seem to use much memory.  Maybe Maple is getting stuck in a loop?

## mod 3 comes up quickly...

Just for fun I tried mod3 and it comes very quickly

Factor(a^4+a^2*b^2+b^4+a^2*b*c+a*b^2*c+a^2*c^2+a*b*c^2+b^2*c^2+c^4)mod3;

(a2+ab+ac+bc+b2+c2) (a+b+c)2

mod2 "hangs" so to speak on my system as well

## Shift+Space...

How about Shift + Space.  Some people like to put spaces in exponenets for easier reading.

Maybe there's a way to make a user defined keyset to map Shift+Space or in your case Space to the right arrow.

## and if b:=cos(x)...

Yes thanks.  Does that work the same if we change b:=cos(x) ?

## and if b:=cos(x)...

Yes thanks.  Does that work the same if we change b:=cos(x) ?

## All roots with one simple command...

The reason for the original question was to find a simple command that returned all the roots (mainly real) and Student(Calculus1) seems to do that quite well. Using fsolve doesn't always seem to return all the roots and only then some extra work is needed to be done to find them (ie examining a graph and specifying limits around each axis crossing to get a root - not the most efficient way of course).

## All roots with one simple command...

The reason for the original question was to find a simple command that returned all the roots (mainly real) and Student(Calculus1) seems to do that quite well. Using fsolve doesn't always seem to return all the roots and only then some extra work is needed to be done to find them (ie examining a graph and specifying limits around each axis crossing to get a root - not the most efficient way of course).

## Thanks for the clear explanation...

Thanks for the clear explanation.  I understand now why Maple returns only a single value.

## Thanks for the clear explanation...

Thanks for the clear explanation.  I understand now why Maple returns only a single value.

## fsolve...

Thanks.

Any reason why fsolve won't show the values if the range is specified?

## fsolve...

Thanks.

Any reason why fsolve won't show the values if the range is specified?

## imaginary - I missed that...

###### Whoa!  I totally missed noticing the imaginary i in there.  No problems then.
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