I updated a few days ago my Maple's version to 2018 (instead of 2017).

Unfortunatelly, since then I couldn't run Matlab code that uses Maple's engine (it worked fine before the update). I can't run any code that uses symbols.

I tried to follow this link:

https://www.maplesoft.com/support/downloads/mtm1102_installation.aspx

but I don't see the file "MapleToolboxforMATLABUpgrade_Windows.exe" anywhere.

Can anyone suggest what I can do to make it work?

I have Maple 2018 and Matlab 2017 if it matters.

Thanks

How can I resolve the following error message? More specifically, how do I set up a coordinate system different from cartesian, spherical, etc in order to pass it to the metric? 

restart;
with(Physics);

Setup(mathematicalnotation = true);
                 [mathematicalnotation = true]
Setup(signature = `+---`);
                     [signature = + - - -]

ds2 := [(x^2-y^2)*cos(2*u)+2*x*y*sin(2*u)]*(du^2)-2*x*(dv^2)-dx^2-dy^2;
Setup(coordinates = (Z = [u, v, x, y], metric = ds2));
* Partial match of  'coordinates' against keyword 'coordinatesys\

  tems'
Error, (in Physics:-Setup) expected a list with 4 names, where 4 is the spacetime dimension, or one of the keywords cartesian, spherical, cylindrical; received: ds2

When I used fsolve command for a system of the nonlinear algebraic equation, the result will be one set of solution

for example:

f := x+2*y = 3;
g := y+1/x = 1;
fsolve({f, g});
              {x = 2.000000000, y = 0.5000000000}

where when we use the solve command

we will get

solve({f, g});
                                
               {x = -1, y = 2}, { x = 2, y = 0.5 }.

The question is:  why fsolve command give the values of x and y (x=2 and y=0.5 ) and ignore ({x = -1, y = 2})?

why didnt give ({x = -1, y = 2}). and ignore (x=2 and y=0.5 )?
                                


 

Help page says "minus~" is an element-wise operators in Maple
Why this command doesn't return [{1}, {3}] but generates an error ?
[{1, 2}, {2, 3}] minus~ {2};
Error, dimension bounds must be the same for all container objects in an elementwise operation

OK, you can answer I could use  map(u -> u minus {2}, [{1, 2}, {2, 3}]), but it wouldn't explain the reason of the (my?) error.

Thanks in advance

duaxisplot([x=1,x=2,x=3], ....);

just want to plot multiple vertical line with a time series at the same time

and the desired result is

x → P(1, 1, 1, x)
x → P(2, 1, 1, x)
x → P(3, 1, 1, x)

How could one tell Maple to simplify  log(x)+log(y) to log(x*y)?

As Maple own apps says  https://www.maplesoft.com/support/help/maple/view.aspx?path=MathApps%2FProductRuleForLogarithms

And known identity  https://en.wikipedia.org/wiki/List_of_logarithmic_identities

This is what I tried

restart;
simplify( ln(x) + ln(y), symbolic);
simplify( ln(x) + ln(y), ln);
simplify( ln(x) + ln(y), size);

Maple knows this identity, becuase

simplify( ln(x*y)- (ln(x)+ln(y)) , symbolic)
       0

Note, this identity has no assumptions on it. It is defined as is.

Maple help page says

ln(x y) ==> ln(x) + ln(y) provided     0 < x  and   signum(y) is unknown

so, is Wikipedia and all the other references I saw wrong for not showing this assumption on x>0 whey they state the product rule for logs?

I want to go the other way

 ln(x) + ln(y) ==> ln(x y) 

So this releation should really be written as

ln(x) + ln(y) <==> ln(x y) 

How could I substitute the (t1*e) into t2 at the index of e?  I am trying many ways to do that, but it doesn't work. please help me.
 

Download question.mw

Hi all

Hope the best for all. 

I have a single product of two sum, where the second sum admits one variable, namely j, from first one.

how can I it via maple?

thanks for any help.

I have a function g(x,t), which is the numerical result of a PDE.

How to calculate the function f (t), defined by:

f:=t->int(g(x,t),x=a..b)

I tried to calculate that way, but that did not work.

Thanks for the help.

 f(a)(x) = a*x mod 256  for all x in Z[256]

how can write this loop that has written in matlab to maple??
i=1;
for e=T1P1:0.0399:T1P;
    E(i)=e;
    gama1(i,:)=a-atan(e/Rb1);
     i=i+1;
end
 

HELLO

I AM A STUDENT AND WAS LOOKING FOR USING MAPLE2018.

I REQUESTED FOR A MAPLE EVALUATION. MY QUESTIONS ARE:

FOR HOW LONG CAN I USE THIS EVALUATION VERSION?

SECONDLY, WHAT SOFTWARE FACILITIES I WOULD NOT GET WITH THIS EVALUATION VERSION? WHAT ARE THE DIFFERENCES BETWEEN THE PRICED ENTERPRISE VERSION AND MAPLESOFT EVALUATION VERSION?

THIRDLY, WHAT ARE THE DIFFERENCES BETWEEN MAPLESOFT STUDENT VERSION AND THE ULTIMATE PRICED ENTERPRISED VERSION?

PLEASE REVERT BACK TO ME AT THE EARLIEST.