solve(9*log10(x + 1) = root[3](x), x);
Warning, solutions may have been lost

How come maple can't solve this equation with the standard command?

And what can I do to find all the solutions?

EDIT: For some reason I can't repply.
@Kitonum , thanks for answer.

I suspect there may be more real solutions than the ones in your example, but if I change the range some of those in your example goes missing. Is that a bug?

with(plots);
with(LinearAlgebra);
A := Matrix([[2, 1, 0, 0, 3], [0, 2, 1, 0, 0], [0, 0, 2, 1, 0], [0, 0, 0, 2, 1], [0, 0, 0, 0, 2]]);
sparsematrixplot(A, matrixview, color = "Red", symbol = "cross");

How do I change the plot to show other symbols? Even though I write for example "cross" I still get the default box.

Also, is there a way in which I can let the color depend on the number in the matrix? Right now it just shows all non-zero entries.

When plotting for exampe 1/x, can I make the x-axis show 1/10, 2/10, 3/10 and so forth instead of 0.1, 0.2, 0.3?

Is there a command that can show me all multipermutations?

If I have a set (1,2,3) I want an output of all the multipermutations of length n.

For example for n=2:
[1,1],[1,2],[1,3],[2,1],[2,2],[2,3],[3,1],[3,2],[3,3].

I suspect I have to use the Iteration command MultiPartition, but I don't understand the examples given on maplesoft:
https://www.maplesoft.com/support/help/Maple/view.aspx?path=Iterator%2FMultiPartition

In this procedure I roll x dies and request a sum of the dies, n.
I then specify the third argument, o, to be exactly, minimum or maximum, so that it generates random rolls until the sum matches the conditions of my third argument.
It then returns the roll in a list and the number of rolls needed to match the conditions.

optional_argument.mw
Can I somehow make the third argument optional, with exactly being the default, so that I can enter only sim(3,12) to get a roll that is exactly 12?
I've written through this maplesoft document, but don't quite seem to understand how to make an optional argument in  this regard: https://fr.maplesoft.com/support/help/maple/view.aspx?path=parameter_classes

Any help in understanding this is appreciatet :)