How to draw an object in 3d which is like a spring

3 layers of circle already enough

Who was the creator of Maplesoft?

A friend asked me a question and I didn't know the answer to give him. So I decided to share the question with you guys. According to him, Is there an inbuilt function in maple that we can use to specify "time" on a worksheet/document? What the time does is to run or execute the worksheet/document at the time stipulated. Meaning in his absense, he wants maple to run a particular worksheet at a particular time which he will decide.Hope my question is sensible?

Is there some sort of analog of  option  discont=true  in  plot3d?  Can I remove these vertical cylindrical surfaces in the following example? They correspond to the zeros of the denominator:

plot3d((x^2+sin(x))/(y^2+cos(x)), x = -7 .. 7, y = -5 .. 5, view = [-7 .. 7, -6 .. 6, -1 .. 7], numpoints = 50000, scaling = constrained, axes = normal);

plots[implicitplot](y^2+cos(x), x = -7 .. 7, y = -5 .. 5, scaling = constrained, numpoints = 5000);

I want to solve the following problem:

Print  (a, b, c, d, e, f, g, h)

this  should satisfies

1, a,b,c,d,e,f,g,h are integers  from -10 to 10

2, a+b+c+d+e+f+g+h=4 and a+2b+3c+4d+6e+8f+12g+24h=24

Please help me.

Thank you very much.

Or I didn't get something right? This is with Maple 16.02 on a Mac:

> for i from 1 to 10 while i<=5 do print(i) end do; #works all right
> for i from 1 to 10 while i>=5 do print(i) end do; #nothing shows up?

M5 :=series((1+1/(2*a^2)+(1/2)*b^2-1/(2*a))^a, a=0,3);

there is a variable b too

M6 := 1+(-ln(2)-2*ln(a))*a+(-1+(1/2)*(-ln(2)-2*ln(a))^2)*a^2;
with(gfun):
seriestoratpoly(series(M6, a, 4), ['egf']);

I'm trying to solve the following inequality:

ln(x+1)<x^2-1

but the solve command returns:

"Warning, solutions may have been lost"

Can someone halp me?

Thank you.

Carmelita

I am trying to write procedures in MAPLE to deal with pseudo differential operators such as P=1+f_1D^{-1}+f_2D^{-2}+f_3D^{-3}+...,  where D=d/dx, f_i are functions of x. D^n for n<=0 work like usual differetial operators for n>=0. For example D^nD^m=D^{m+n}, D^n f=\sum_{i>=0}\binom{n}{i}(D^i f)D^{n-i}, where \binom{n}{i} are binomial coefficients given by n(n-1)...(n-i+1)/i! for n<= 0. I am wondering which package in MAPLE I could begin with, and how can I define D^{-1} and generally D^{-n}.

Thank you very much!

u := x -> Int(exp(-(xi-x)^2)*exp(xi), xi = -infinity .. infinity, method = _d01amc);
evalf(u(0.));

gives an error

u := x -> Int(exp(-(xi-x)^2)*exp(xi), xi = -infinity .. infinity);
evalf(u(0.));

2.275875794

u := x-> Int(exp(-(xi-x)^2+xi), xi = -infinity .. infinity, method = _d01amc);
evalf(u(0.));

2.275875794


A bug is suspected...

I have exported Maple code as a Maplet file.  When I click on the file Maplet Launcher opens but nothing "runs".  It looks like it's trying because the icon flashes, but no window opens.  The Maple worksheet from which the Maplet was generated runs fine.

Any suggestions as to how to get Maplet Launcher to run my Maplets?

Thanks,

Rollie

Good afternoon sir.

I request your kind suggestion to the above cited query.

With thanks & Regards

M.Anand

Assistant Professor in Mathematics

SR International Institute of Technology,

Hyderabad, Andhra Pradesh, INDIA.

Hi everyone.

i want to undestand how to use the passing by reference in Maple i do this:

generate_x := proc (x)

    x := (rand(1 .. 10))()

end proc;

generate_y := proc (y)

    y := (rand(1 .. 5))();

    print(y)

end proc;

print_xy := proc ()

     local x, y;

     generate_x(x);

     print(x);

     generate_y(y) end proc;

print_xy();

#print(x)  works but generate_y(y) doesn't print the value of y.

Can you help me to understand WHY i dont get the print of y.

Thanks and happy christmas to you!

Hello,

Is it possible to have the labels of the x-axis and of the tickmarks above the axis?

Thank you!