Finding the functionality for the loop

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Amy Topaz
Amy Topaz el 14 de Mzo. de 2022
Comentada: Amy Topaz el 14 de Mzo. de 2022
I am new to Matlab. I am making a formula/syntax book as a part of my club activity. I was finding logics for implementing loops in matlab without actually using loops. Is there any other way?
Is there any other way of writing by not using for loop in matlab
t = linspace(10, 1000, 100);
for 1:n
y(n)=1+t(n)^2;
eq = @(x) (N + x)/(y(n) + k) + N*x*exp(-(t(n)));
end
%Say we need to find the range of values of solution of eq for all values of range
%n. N, k are constants.
%Is it possible to implement the same without for loop
  2 comentarios
Walter Roberson
Walter Roberson el 14 de Mzo. de 2022
Note that you are overwriting all of eq in each iteration of the loop.
When you say "solution of eq" are you looking for the values of x such that eq(x) == 0 ?
Amy Topaz
Amy Topaz el 14 de Mzo. de 2022
yes

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Walter Roberson
Walter Roberson el 14 de Mzo. de 2022
syms t N k x
T = linspace(10, 1000, 100).';
y = 1 + t^2;
eqn = (N + x)/(y + k) + N*x*exp(-(t))
eqn = 
sol_x = solve(eqn, x)
sol_x = 
sols_x = subs(sol_x, t, T);
sols_x(1:5)
ans = 
sols_x(end)
ans = 
vpa(limit(sols_x(end), N, 1))
ans = 
vpa(limit(sols_x(end), N, inf))
ans = 
  2 comentarios
Walter Roberson
Walter Roberson el 14 de Mzo. de 2022
Note that if you are not using the symbolic toolbox, then the exp(1000) that shows up in the last entry, will almost certainly overflow double precision to give you infinity at that point.
Amy Topaz
Amy Topaz el 14 de Mzo. de 2022
Thank you so much for detailed explanation

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