Taking values from a Matrix and Inputting into an equation, using Loops

Hello.

I have a matrix say: A = [1 2 3 4 5 6 7] and an eqaution y = x^2

I need to find a way to take each value of the matrix and input it into y in an automated way, say using For loops. I am also trying to do this by not making the resulting values of y as a matrix i.e. I just want the answer y gives for each value taken from a to be stored as a number and not a matrix.

I am a relative beginner to MATLAB and have no idea how to do this.

Any help greatly appreciated.

Answer 1

[Serhii Tetora]

A = [1 2 3 4 5 6 7];

for i = 1:length(A)
    x = A(i);
    y(i) = x^2;
end
y

[RS]

This results in y = [1 4 9 16 25 36 49] which is a matrix

Is there any way I can take each of the answers of this matrix and store it as a different new variable using loops, for example:

Ans1 = 1

Ans2 = 4

Ans3 = 9

etc

[Serhii Tetora]

A = [1 2 3 4 5 6 7];
for i = 1:length(A)
    x = A(i);
    y(i) = x^2;
    eval(sprintf('Ans%d = y(i)',i))
end

Answer 2

[William Alberg]

Hello Omar

If you want to replace "y" with one of the values in "A", you can do it the following way:

A = 1:7;

syms x y
eq = y == x^2;

for i = 1:length(A)
	eq_temp = subs(eq, y, A(i)) 
end

If you want to calculate y, i would recommed doing it the following way, where "y = f(x)":

f(x) = x^2;

for i = 1:length(A)
	val_temp = f(A(i)) 
end

[William Alberg]

I did not see Serhii's repley.

I also misunderstood, i thought you wanted the equation to be in symbolic format.