Hello.

I have following peace of code:

>restart;
>assume(a::complex);
>z1:=t=conjugate(a)*b;
>z2:=a^2;
>a:=solve(z1,a);
>z2;

I need to get (conjugate(t))^2/b as a result of last operation but get a~^2. What do I have to change in code? Of course, I can skip

>assume(a::complex);

and it will get me exactly what I need. But I have to use this command for other reasons.

Thank you.

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Hello,

First of all I just want to say that your forum is great and it helped me to find a lot of new stuff for Maple. I am yet still a beginner but …we all need to learn. So let’s get to my question. I have an equation with 2 variables - x and y. This is the equation

x = y*(25+2*x)^(2/3)/(25*(.566*(25*x)^(2/3)))

So… I know I can solve the equation for x and y and I can give it specific values for y and it solve it every time. When,...

Dear all,

I’m a beginner in Maple and I have problem in understanding the RootOf

my equations are shown below:

M1alone := (1/2)*hs*fm*sigma*mu/(Ps*sqrt(sqrt(M1/h0)/Ps+ts))-As*h0*mu^2/M1 = (1/2)*hs*mu^2/Ps-(1/2)*hs*mu:

> M1sol := isolate(M1alone, M1);

M1 = Ps^2*(-ts+RootOf((-hs*mu*Ps+hs*Ps^2)*_Z^5+hs*fm*sigma*_Z^4*Ps+(-2*hs*Ps^2*ts+2*hs*mu*ts*Ps)*_Z^3-2*hs*fm*sigma*ts*Ps*_Z^2+(hs*Ps^2*ts^2-2*As*mu-hs*mu*ts^2*Ps...

I need to solve elementary equation, where "t" is real and all other variables are complex values:

Bonjour,

Où se trouve l'extention ?algcurves,intersectcurves dans maple 12?

Merci d'avence,

Gérard.

r1:=2*(1-s^2)^(1/2)*arctanh((1+s)*tanh(x)/((1-s)*(1+s))^(1/2))/((1-s)*(1+s))^(1/2)+ln((1/2)*arccosh(1/s)-x)

with x=1/2*arccosh(1/s)-beta*u

is to be calculated to the first order in u.

in fact im only interested in the first order not in the zero order.

so when applying the series I get for the first order

-beta*u/sqrt(1-s^2)

whereas by hand I get:

-beta*u*s/sqrt(1-s^2)

 I'd really appreciate some idea since...

I want to draw a graph of this non-linear equation

d^2*y/dt^2+y^3-sin*t = 0

when:

y(0) =0

y'(0)=1

someone can help me ?? 

Bonjour,

Comment se calcule (bien sûr avec Maple) la multiplicité d'intersection de deux courbes algébriques d'équations f(x,y)=0,g(x,y)=0 ?

Merci d'avence

Gérard.

Maple can do:

assume(H>0)

this function:

2*arctanh((1+s)*tanh(x)/sqrt((1-s)*(1+s)))+ln((1/2)*arccosh(1/s)-x)

shall be calculated @ x=1/2*arccosh(1/s)

when taking the limit maple tells me its 0

whereas when calculating it by hand i get ln(sqrt(1-s^2)/s)

whats the problem?

PS: 0<s<1

Notice that the order of the output from the EulerLagrange command when three functions are input does not correspond to the order of the functions listed, and when they are requested separately, the last function is not included:

with(VariationalCalculus):

T3:=(1/2)*m*(diff(r(t),t)^2+r(t)^2*diff(theta(t),t)^2+diff(z(t),t)^2):
U3:=m*g*z(t):
L3:=T3-U3;

EL6:=EulerLagrange(L3,t,[r(t),theta(t),z(t)]);
EL6ra:=EulerLagrange(L3,t,r(t));

EL6thetaa:=EulerLagrange(L3,t,theta(t));
EL6za:=EulerLagrange(L3,t,z(t));

I need to view in log scale the y-axis of the plot I get using the command implicitplot. Any solution?

Francesco

I'm trying to evaluate this triple integral in the rectangular coordinate system and Maple appears to be stuck after the second iterated integral. I then tried to evaluate the same integral in another computer algebra system and got the answer almost instantaneously. My guess is that system converted it to an integral in the cylindrical coordinate system. Why does Maple not do the same? Is there a way to force Maple to do so without manually doing the conversion? I hope there isn't a typo that I'm missing.

I have the following problem with the commands "Infinitesimals" and "InvariantSolutions". After using them to a system of firsst-order PDE's, the following message appears:

 Error, (in table["k"]) expected a request of prolongation w.r.t one of 2 independent variables; received a request w.r.t the (inexistent) 4th one

Does anybody know, what this message means ? I am a beginner with the commands "Infinitesimals" and "InvariantSolutions"...

Hello,

I have a model in MapleSim for which I've generated the optimized C code using the connector toolbox, and I'd like to work with it directly. I was wondering if there is any documentation or examples of how to do this? I haven't been able to find any online.

Thanks!