MATLAB equivalent of Mathematica NSolve

[jemma]

Hi all,
In Mathematica I have used the NSolve function to give me all the possible values of a1, a2 and a3, given the parameters I have set for the equations, for example:

NSolve[{an1 == a1, an2 == a2, an3 == a3, an4 == a4} /. params, {a1, a2, a3}]

Is it possible to do this in MATLAB to find the different values of a1, a2 and a3?

Also, in MATLAB I have a While loop saved as a funtion m-file which is used in another m-file within a For loop that includes a count i=1:1000. I want to do this in Mathematica so that:

For i=1:1000,
(then my while loop function)
If (conditions), count = count+1
End.

How do I do this in Mathematica?
Thanks!

 

[mmwave]

Hello,

Yes, it is possible to find the different values of a1, a2, and a3 in MATLAB using the NSolve function. The syntax is slightly different, but the functionality is the same. You can use the following code:

syms a1 a2 a3
eqns = [an1 == a1, an2 == a2, an3 == a3, an4 == a4]; % define your equations
params = [an1, an2, an3, an4]; % define your parameters
sol = solve(eqns, [a1, a2, a3]); % solve for a1, a2, and a3
a1_values = double(sol.a1); % convert symbolic solutions to numerical values
a2_values = double(sol.a2);
a3_values = double(sol.a3);

As for your second question, you can use a While loop in Mathematica as well. The syntax is similar to MATLAB, but instead of using a count variable, you can use the built-in function "Length" to get the number of iterations. Here's an example:

count = 0; % initialize count
While[i < 1000,
(* your while loop code *)
If[conditions, count = count + 1]; % check conditions and increment count if necessary
i++ % increment i
]
count % print the final count

I hope this helps. Let me know if you have any further questions.