Hello there !

I'm currently working on a project and I have a simple problem that I can't solve.

I've solved an equation system and I get an answer which looks like G := {A=exp1,B=exp2}  (exp stands for expression)

I would like to assign exp1 and exp2 to my variables : A:=exp1 & B:=exp2

How can I manage to get that ? 

Thank everyone :)

plot([(exp((1/2)*x))((1/2)*x+2*t*(1/3)), (exp((1/2)*x))(1+t((-256)+240-108+27)/2^7+t(168-24+27)^2/2^7+(1/3)*t^3*((-16)+9)/2^6+(1/4)*t^4/2^7), (exp((1/2)*x))(1+t(256*(-1.01)+240*(-1.01)^2+108*(-1.01)^3+27*(-1.01)^4)/2^7+t(168*(-1.01)^2+24*(-1.01)^3+27*(-1.01)^4)^2/2^7+(1/3)*t^3*(16*(-1.01)^3+9*1.01^4)/2^6+(1/4)*t^4*(-1.01)^4/2^7)], x = -4 .. 4, t = 5)

Hello!

I im interesting  how to stop executing algorithm if user chose "cancel" in maplet filedialog?

restart;
maplet:=Maplet(FileDialog['FD1']('filefilter' = "*.txt,*.m",
'filterdescription' = "TXT-files and Maple m-files",
'directory'= "D:\\NIR\\Experimental result\\Data\\",
'onapprove' = Shutdown(['FD1']), 'oncancel' = Shutdown())):
Maplets[Display](maplet):
f1:=%[1];
#Point to stop executing
a := 1;
b := 2;

I have this expression:

-sin(alpha)*(sin(theta1)*cos(theta)-cos(theta1)*sin(theta))

which can be combined using a trigonmetric formula...

However when using combine() it also tried to sneak alpha into the result...

Is it possible to freeze the variable alpha when combining?

Can anyone tell me why maple wont accept my constraint?

Code:

LPSolve(3*x__1+14*x__2+18*x__3+6*x__4+2*x__5, {3*x__1+5*x__2+6*x__3+2*x__4+x__5 <= 10}, x__1 = 0 .. 1, x__2 = 0 .. 1, x__3 = 0 .. 1, x__4 = 0 .. 1, x__5 = 0 .. 1, maximize = true)

It returns the error "Warning, problem appears to be unbounded", when i can clearly see that it is bounded!

Im trying to solve the LP-relaxation of a binary problem which is why i have a 0..1 bound on every variable. Running Maple 2016.1 on windows if thats a help.

Please help me

My Question

how may i know which is the theta prime or f double prime or theta only or f prime and theta double prime?

 i have attach double prime

tq maple
 

Download plot.mw
 

Download plot.mw

Maple gives me poor accuracy for simple arithmetic problems.

My calculator gives me 0.7 and 0.9 respectively.

I guess I could do evalf(convert(2.59/3.7,fraction)) = 0.7000000000

but this seems excessive.

Sup Brainiacs

I found this "solved" problem for backing rectangular items efficiently. The first example (without rotation of items).

https://www.researchgate.net/file.PostFileLoader.html?id=59938b635b49527571134c33&assetKey=AS%3A527790252490752%401502846410852

I think I have the constraints the same as the text, but I get different solutions. my questions are at the end of the worksheet. Thanks

I 2D_BP.mw

How does one look through the Maple 2017 help for a code structure. I have been looking for how to construct a While loop and I am not able to find any example that implements while loop nor the code structure for it.

Any help is appreciated.

I'm getting the message

Secure Connection Failed

when trying to get into this forum using the latest version of Firefox.
For writing this I used Internet Explorer.

The message continues with:

Has anybody else experienced the same?
What to do? 

Please, anyone with usefull informations to hint me. Looking forward to your favorable response. 

Thanking you in advance

Hello,

how could I force Maple to solve this pde

pdsolve(y*(diff(f(x, y, z, w), x))-x*(diff(f(x, y, z, w), y))+w*(diff(f(x, y, z, w), z))-z*(diff(f(x, y, z, w), w)) = 0)

When I hit enter, it happens nothing.

How do you evaluate a function expression at given variable values?

f := 2*sin(x)-x^2/10.00:

eval(f, x = 5) gives 2*sin(5)-2.500000000

evalf(eval(f, x = 5)) gives -4.417848549

So is there a way we can just numerically calculate f(x) where x = 5?