whatchu mean I didn't save my comments :(

This commit is contained in:
LinlyBoi
2023-05-07 21:09:12 +03:00
parent 36f449abab
commit c132ec552f
2 changed files with 11 additions and 14 deletions

View File

@@ -2,20 +2,21 @@ A = [3, -0.1, -0.2; 0.1, 7, -0.3; 0.3, -0.2, 10]
B = [7.85; -19.3; 71.4]
init = [0, 0, 0]
# gotta have an initial assumption (usually 0s)
function solution = gauss_seidel(A,b,initial)
for i = [1:length(A)]
sigma = 0;
for j = [1:length(A)]
if(j != i)
# ze part where we have a32 - a31 etc
sigma = sigma + A(i,j) * initial(j)
endif
endfor
# divide by elements coefff and the free term minus the summation above (rest of row)
initial(i) = (b(i) - sigma) / A(i,i)
endfor
solution = initial
endfunction
balls = gauss_seidel(A,B,init)
balls = gauss_seidel(A,B,balls)

View File

@@ -3,20 +3,16 @@ clear clc
pkg load symbolic;
f = @(x) 3*x.^2 - e.^x
f = @(x) 3*x.^2 - e.^x #example function we use for every single thing
a = 0
b = 1
syms x;
ff = f(x)
function root = newton(f, x0)
if abs(f(x0)) < eps
root = x0;
if abs(f(x0)) < eps #Breaking condition
root = x0
return
endif
syms x;
df = diff(f(x));
ff = function_handle (df);
x0 = x0 -( f(x0) / deriv(f,x0) )
x0 = x0 -( f(x0) / deriv(f,x0) ); # dividing by the derivative
newton(f, x0)
endfunction
@@ -24,14 +20,14 @@ newton(f, 0.5)
function root = secant(f, x0, x1)
if abs(f(x0)) < eps
root = x0;
root = x0 # breaking condition
return
endif
syms x;
df = diff(f(x));
ff = function_handle (df);
temp = x1;
x1 = x1 -( ( f(x1) * (x1 - x0) ) / ( f(x1) - f(x0) ) )
temp = x1; # Temp variable for reassigning x0
x1 = x1 -( ( f(x1) * (x1 - x0) ) / ( f(x1) - f(x0) ) ); #Formula that replaced y' in newton
x0 = temp;
secant(f, x0,x1)
endfunction