nm

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8 years, 295 days

MaplePrimes Activity


These are questions asked by nm

In Maple help, there are many examples, which shows the input and output in 2D. I like to see the input in 1D (since I use worksheet style, I prefer to use input in 1D, but keep output as 2D).

So it is easier for me to see the input part of the command in the help pages as 1D, since it will match what I will type.

Is there a way to change this? I searched settings and googles and see nothing yet. I am using 17.02 on windows.

Is there a way to remove the small dashed box that shows up while one is typing in document mode?
Also, is there a way to remove italic style from everything? I do not like italic at all. I tried many things, such as

Format > Styles. Select the 2D Input character style and click modify

but when I start new line, it goes back to italic.

I can also open the style sheet file (my_styles.mw) that I use, and look at the XML there. What do I need to change...

Why can't Maple solve this integral equation using intsolve? May be my error entering it?

sys:= diff(y(t),t)=2-t^2/2 - 1/4 * int(y(t1),t1=0..t);
intsolve(sys,y(t));

Error, (in unknown) invalid input: diff received 0, which is not valid for its 2nd argument

I solve it by hand, and wanted to verify the solution. I get y(t)=C* sin(t/2) -4*t and C can be found to be 12
 

I was trying to help someone solve this ODE in another forum. Can Maple solve it? I think the problem is not well formed, but I get these errors:

restart;

ode:=y(x)^2*diff( diff(y(x),x$2)/y(x),x$2);

dsolve({ode=1,y(0)=0,y(1)=0,D(y)(0)=0,(D@D)(y)(1)=0},y(x),numeric);

The error is

Error, (in dsolve/numeric/bvp) system is singular at left endpoint, use midpoint method instead

The error message can be a little more clear. I had to...

I might be doing something wrong here. But when I ask Maple 17 for the integrating factor of this ODE, it does not match the result if I find the integrating factor directly.

restart;
with(DEtools):
ode:=2*t*y(t)+t^2*(diff(y(t), t))+t^2*y(t)-2*y(t)-t*(diff(y(t), t)) = 0;
intfactor(ode);
simplify(exp(int( (t^2+2*t-2)/(t^2-t),t)));

Why I am not getting the same result from the last 2 commands above?

 

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