about separating the variable.

i have x = 0 and 2. is there a way to separate those numbers using x1=0 and x2=2 ? i'll use this using programming in matlab.

Answer 1

[Wayne King]

Yes, you can also store them in a vector

    x = [0 2];  
    % or as a column vector 
    x =[0;2];

and then access them by their indices:

x(1)  
x(2)

[Ejay Kasai]

i mean i created a program that computes for x. when the user inputs a polynomial function the program will find the x. in my case i find the x to have 2 numbers. what will i do?

[Wayne King]

Why can't you store them in a vector?

[Ejay Kasai]

because it is a matlab program. if user input a polynomial function and the program finds two number of x how can i store them in vector? for example the user inputs a polynomial function and my program automatically finds the x. how can it be automatically store in a vector?

[Jan]

@Ejay: The question is not clear. Storing two values in a vector is trivial in Matlab.

Please post the relevant part of the code. Perhaps then it is getting clearer what you mean by: "input a polynomial function" and "the program finds two numbers".

[Ejay Kasai]

ok so, this is the program

poly1=input('First polynomial function: ','s');

poly2=input('Second polynomial function: ','s');

syms y;

z1=solve(poly1,'y');

z2=solve(poly2,'y');

xi=solve(z1-z2);

yi(1)=eval(subs(z1,xi(1)));

yi(2)=eval(subs(z1,xi(2)));

ezplot(poly1)

hold all

ezplot(poly2)

plot(xi,yi,'o')

what if the user input poly1: y=x^2 and ply2: y=2*x then xi will be 0 and 2. and i want to separate those two number of xi to x1=0 and x2=2 automatically if the program finds the two x's.

[Ejay Kasai]

i got it. Thank you very much!