Hi everyone, I've got problem with while loop. I have this function with Xstart = 0.2 ; Xfinish = 2 ; deltaX = 0.2 and I need to solve it in smath studio, but while loop is processing forever and never ends. I'm doing something wrong, or it's a bug? Thanks!

Images:

https://postimg.cc/Q9mqWkKd Smath studio

https://postimg.cc/KKZkgXPt Function I need to solve

Is this what you need?

Wrote

Is this what you need?

No, I need a range of numbers for X and Y, like: First X = 0.2, it's calculating Y(0.2) and shows first Y result, then X = 0.4 (previous X + delta X) and it's calculating Y(0.4), and until x = 2. In final I need a range of all X and all Y results.

Wrote

I'm doing something wrong, or it's a bug? Thanks!

Some examples ...

Utilities Pts Critical Monte-Carlo.sm (18,33 KiB) scaricato 1244 volta(e).
Utilities Program While FindIndex.sm (34,87 KiB) scaricato 1231 volta(e).

Wrote

Wrote

I'm doing something wrong, or it's a bug? Thanks!

Some examples ...

Utilities Pts Critical Monte-Carlo.sm (18,33 KiB) scaricato 1244 volta(e).
Utilities Program While FindIndex.sm (34,87 KiB) scaricato 1231 volta(e).

I'm not sure I understood how to solve my function by this examples.

I don't know what I'm doing wrong:
https://postimg.cc/Q9mqWkKd

Wrote

I'm not sure I understood how to solve my function by this examples.

Your proposal is not a case of while loop,
strictly wrong application.

Page44 Unknown.sm (73,22 KiB) scaricato 1453 volta(e).

You can do the job using a while loop but it is just one option (perhaps not the most straightforward one).


loops.sm (10 KiB) scaricato 1257 volta(e).

Wrote

Wrote

I'm not sure I understood how to solve my function by this examples.

Your proposal is not a case of while loop,
strictly wrong application.

Page44 Unknown.sm (73,22 KiB) scaricato 1453 volta(e).

I need all X and all Y(x) values in the end, for Xfirst = 0.2, Xlast = 2 with step 0.2.
y(0.2)=
y(0.4)=
y(0.6)=
...
y(2)=
And it should look something like this:
x= 0.2 y= -0.6126
x= 0.4 y= 0.2173
x= 0.6 y= 0.7064
x= 0.8 y= 1.0721
x= 1.0 y= 1.3842
x= 1.2 y= 1.6771
x= 1.4 y= 1.9738
x= 1.6 y= 2.2924
x= 1.8 y= 2.6501
x= 2.0 y= 3.0639

I can type every y(x) in smath studio:
https://postimg.cc/0bddLTqF
But, is it possible to do it with while loop?

Wrote

You can do the job using a while loop but it is just one option (perhaps not the most straightforward one).


loops.sm (10 KiB) scaricato 1257 volta(e).

I need all X and all Y(x) values in the end, for Xfirst = 0.2, Xlast = 2 with step 0.2.
y(0.2)=
y(0.4)=
y(0.6)=
...
y(2)=
And it should look something like this:
x= 0.2 y= -0.6126
x= 0.4 y= 0.2173
x= 0.6 y= 0.7064
x= 0.8 y= 1.0721
x= 1.0 y= 1.3842
x= 1.2 y= 1.6771
x= 1.4 y= 1.9738
x= 1.6 y= 2.2924
x= 1.8 y= 2.6501
x= 2.0 y= 3.0639

I can type every y(x) in smath studio:
https://postimg.cc/0bddLTqF
But, is it possible to do it with while loop?

What you are asking for is so restricted and useless for purpose !
Then you can:
1. start wherever [L] as long as computable your ln(,)
2. end wherever [N]
3. as fine step size [Δ]
4. algo style for infinite applications

Wrote

What you are asking for is so restricted and useless for purpose !
Then you can:
1. start wherever [L] as long as computable your ln(,)
2. end wherever [N]
3. as fine step size [Δ]
4. algo style for infinite applications

I'm asking for this cos' we are learning Pascal programming language in university, and we need to write this function in Pascal with [while a<=b do], and check it in MathCAD or SMath studio program.
I don't need any graphics, I just need to check the function with while loop. You sent example without while loop and without Xlast = 2, so is it possible to check this function with while loop, or no?

Pascal is pretty retarded these days for Engineering applications !
Years ago, Mathcad for Universities was pretty freaked.
Better use Smath productive for studies & Engineering.



Golden ratio will be a life time productive Companion.
As well as an advanced WhileLoop.

Golden Ratio jmG.sm (39,41 KiB) scaricato 1221 volta(e).

Wrote

so is it possible to check this function with while loop, or no?

Absolutely, and there are several ways.

If you need a step-by step feedback on the fly you can use breakpoints (menu of math regions) and the debugger window ("View" menu). You might have to store the intermediate results in a dedicated variable though, to don't look into the whole matrix at each step.

Also you can use the function trace() and the output window, or you can build math strings using concat() and other functions, or maybe something more complex using the script region plugin by uni.

loops-1.sm (30,01 KiB) scaricato 1164 volta(e).