Execute code:

?solve

Or:

?fsolve

If you want a strange result execute code:

restart:
pde := diff(u(x, t), t)+u(x, t)*(diff(u(x, t), x)) = mu*(diff(u(x, t), x$2));
ic := u(x, 0) = piecewise(x >= 1, 0, x < 0, 1);
sol := `assuming`([pdsolve([pde, ic])], [mu > 0, t > 0, x in real])

@Kitonum 

Ohh Yes.I thought Maple did not have any bugs.That's why i did not checked.

Thanks for info.

The input should be provided in cut-and-pastable form. Please post actual code rather than an image of code.

@mmcdara 

If is a standard trick then Maple does no know  about it.

Can you provide the matrix in a copy/pasted form, or something? Nobody is going to type a  matrix in by hand!

At first you must solve y from eqn and then put to diff(y, x).

See:https://en.wikipedia.org/wiki/Arc_length

The input should be provided in cut-and-pastable form. Correct yours syntax errors.

@Joe Riel 

@Rouben Rostamian  

Thanks.

In Mathematica is simpler:

Maple always complicates many things.

@vv 

Yes I know identify mayby fails in certain conditions.

If OP want more information about identify function  just need to enter:

?identify

Please post actual  Maple code rather than web page address.

@rlopez 

with(Student[MultivariateCalculus]);
MultiInt(r*exp(-a^2/r^2), [t, r] = Region(0 .. (1/2)*Pi, 0 .. 2*a*cos(t)), output = steps);

it returns it unevaluated.

Second approach:

MultiInt(r*exp(-a^2/r^2), r = 0 .. 2*a*cos(t), t = 0 .. (1/2)*Pi, coordinates = polar[r, t], output = steps);

no either.

Probably this integral has no-close form to known special function.

Mathematica gives only a half answer:

n := 0.5e-1;#decrease value for more  contours.
contourplot(A2, z = 0 .. 1, r = -h(z) .. h(z), axes = boxed, contours = [seq(i, i = -1 .. 1, n)], grid = [80, 80], coloring = ["Niagara Azure", "Orange"], transparency = .4);

@SophiaAraoz 

I edited my answer.

You say: "Does the speed/norm usually need a value for t?"  of course Not.

It's only a variable name "V(10)", I could write: "V-10" or "V10" .I just wanted that variable name is at the 10th  sec.(Speed as a vector (at the 10th sec))

Sorry for my English, is bad. Google translator have only IQ 50.

@assma

Mydata := Matrix([seq([seq(w(x, y), y = 0 .. 4)], x = 0 .. 4)]);

#Export to file:

Export("data.csv", Mydata, base = homedir);

#Import from file to Maple:

Import("data.csv", base = homedir);

Home dir you can find:

kernelopts(homedir);

For more see:

help("Export");

Have fun !