Hello

Dear I want to solve the system of ODEs in attached file for different values of m1 i.e., 3,4,5 how I will use the value of m1 in dsolve. I am waiting your positive response thanks in advance.

Help.mw

Hi, My Error is this:

DEtools; DEplot(MODEL, VARS, DOMAIN, RANGE, [IC1, IC2], stepsize = .1, arrows = THIN, linecolor = COLORS);
%;
Error, (in DEtools/DEplot) invalid range for independent variablehow can i remove error?

Hi,

Why pdsolve is not correctly solving the following

where I get    

but it is correctly solving the next one

where I get ???

I see that it is due to the fact that the variable x is multiplied by a constant, but why is not maple able to manage that?

Thanks for your help,

Javier

Hi Mapleprimes,

I wrote some quick maple code -

for a from 1 to 10 do
if isprime(a)=false then print(ifactor(a)) else print('1',a) end do;
end do

I want to use the factors command to reproduce oeis.org/A027750/

Can anyone help me with this?

Regards,

Matt

Good day!

As part of an exercise I've calculated the length of a hypotrochoid numerically. To check my result I repeated the calculation in Maple, but received a different result. When double checking using WolframAlpha I got the same result as with my numerics. Maybe someone of you can tell me where I made a mistake.

Thanks in advance.
Sören

Link to WolframAlpha calculation: http://www.wolframalpha.com/input/?i=x%28t%29+%3D+%281-0.6%29+cos%28t%29+%2B+0.8+cos+%28+%281-0.6%29%2F0.6+*+t%29,+y%28t%29+%3D+%281-0.6%29+sin%28t%29+-+0.8+sin+%28+%281-0.6%29%2F0.6+*+t%29+from+t%3D0+to+6*pi

Download hypotrochoid.mw

I have a complex function for both the electric and magnetic fields for 2 laser pluses colliding they are only 2 dimensions z,t;

Where a,,  are real constants and Z is the initial offset for the pluses,

I would like to plot them together with there real and imaginary parts on two axes and then extended along the z direction, if possible I would like to animate them. To hopefully get a moving plot like this except it's a laser pluse not a continuous wave,

I want write function get value a1, a2, ..., an to b1, b2, ..., bn.

Example get 1, 3, -9, 5 to a, b, c, d. This is my code

myfunc := proc(oldVars,newVars)

    local i;

    if nops(oldVars) = nops(newVars) then

        for i from 1 to nops(newVars) do

            newVars[i] := oldVars[i];

        end;

    fi;

end proc:

But not work! Can someone help me. Thank you very much

Hello,

In the maple.ini, i defined some folders where i have put my packages.
It seems that, when I made some altercations in the maple.ini, they are not taken into account immediately.
Do you have ideas about when the update of the maple.ini is taken into account ?
And how can I force the update ? Should I restart my computer so that the update of the file is taken into account ?
Thanks a lot for your feedback.

Hey guys,

I have the following occurence:

ii_inf:=x^(2-s)*(x^(-s)*GAMMA(3-s)*GAMMA(2-2*s)/(GAMMA(2-s)*GAMMA(3-2*s))+x^(s-2)*GAMMA(3-s)*GAMMA(2*s-2)/GAMMA(s))/(2-s)+(1/2)*(2*s*x-x+1)*(x+1)/(((x+1)^s)^2*(2*s^2-3*s+1))+x^(1-s)*(x^(-s)*GAMMA(2-s)*GAMMA(-2*s+1)/(GAMMA(1-s)*GAMMA(2-2*s))+x^(-1+s)*GAMMA(2-s)*GAMMA(2*s-1)/GAMMA(s))/(1-s)+(x+1)/((2*s-1)*((x+1)^s)^2)+x/((-1+s)*x^s)-(x+1)/((-1+s)*(x+1)^s);

ii_inf=simplify(ii_inf);

asympt(ii_inf,x,3);

Multiseries:-asympt(ii_inf,x,1);
gives different results...the last one however seems to be the correct one...

What is happening here?

I want to solve the problem described below. I tried using two methods as shown below, each method has been runing for days without solving it. I will really appreciate your help.

Det1 := (1/256)*(Aiso*(c+t)^2*(a^2+b^2)*(mu-1)*Pi^2-4*a^2*b^2*c*Gc)*(16*Aiso^2*Do^2*(c+t)^4*(a^2+b^2)^6*Pi^12+10*(a^2+b^2)^5*((c+t)^2*Aiso+4*Do)*Gc*(c+t)^2*c*a^2*Do*b^2*Aiso*Pi^10+(a^2+b^2)^4*((c+t)^2*Aiso+4*Do)^2*Gc^2*c^2*a^4*b^4*Pi^8-(1024/81)*a^6*Aiso^2*b^6*Tcr^2*(c+t)^4*(a^2+b^2)^2*Pi^4-(2560/81)*a^8*Aiso*b^8*c*Gc*Tcr^2*(c+t)^2*(a^2+b^2)*Pi^2-(1024/81)*a^10*b^10*c^2*Gc^2*Tcr^2)*(Aiso*(c+t)^2*(a^2+4*b^2)*(mu-1)*Pi^2-4*a^2*b^2*c*Gc)*(Aiso*(c+t)^2*(a^2+b^2)*(mu-1)*Pi^2-a^2*b^2*c*Gc)*(16*(c+t)^4*(a^2+(1/4)*b^2)^3*Do^2*(a^2+4*b^2)^3*Aiso^2*Pi^12+(10*(a^2+b^2))*((c+t)^2*Aiso+4*Do)*Gc*(c+t)^2*(a^2+(1/4)*b^2)^2*c*a^2*Do*(a^2+4*b^2)^2*b^2*Aiso*Pi^10+((c+t)^2*Aiso+4*Do)^2*Gc^2*(a^2+(1/4)*b^2)^2*c^2*a^4*(a^2+4*b^2)^2*b^4*Pi^8-(1024/81)*(c+t)^4*(a^2+(1/4)*b^2)*Tcr^2*a^6*(a^2+4*b^2)*b^6*Aiso^2*Pi^4-(2560/81)*a^8*Aiso*b^8*c*Gc*Tcr^2*(c+t)^2*(a^2+b^2)*Pi^2-(1024/81)*a^10*b^10*c^2*Gc^2*Tcr^2)*((mu-1)*(c+t)^2*(a^2+(1/4)*b^2)*Aiso*Pi^2-a^2*b^2*c*Gc)/(b^20*a^20*(c+t)^16) = 0;

# method 1;
EQN := RootOf(Det1, Tcr);

EQN_2 := allvalues(EQN);

# method 2;

EQN := solve(Det1, Tcr);

mar.mw
hi..how i can dsolve these differential equations? omega is unknown and fir solving i add an extra boundary condition, but the error "unable to store %1 when datatype=%2" is appear!!!

how i can remove this error?

thanks

Download mar.mw

Hello again. 3 questions today, a record for me.

I'm looking for a procedure to do this

Combinatorial_explosion.mw

thankyou.

Salutations.

for L:=[5,0,10,3]

What command do I require to find minimum of L which excludes 0? [ 3]

FindMinimalElement?

Hi all....

I wanted to run the bat file from maple worksheet, if anyone knows please help me.

Thanks

Is there a way to to do the following:

such that Uranium containing the presubsup expression  displays the values contained in A, Z and X instead of just the letters?

(Edit):

I can, however, get it to work using the (A)[b]^(c) expression  from the same palette:

Though I don't understand why it works with one and not the other.