Invalid Expression. Check for missing or extra characters.

When I run this code I keep getting the invalid expression error message. How can I fix this? The error occurs at line 28 and 40.

clc; clear;

tic

n = 360;

r1 = 3.3;
r2 = 0.82;
r6 = 1.85;
rcg3 = 2.12;

th1 = pi/2;
th2 = linspace(0,2*pi,n);
th4 = 0;
th6 = 63*(pi/180);

formulation
th3guess = -1.5; 
r3guess = 4.2;
r4guess = 1.2;
r5guess = 2;

m = zeros(n,4);

for i = 1:n
 
 [th3,r3,r4,r5] =

Invalid expression. Check for missing or extra characters.

Error in connector.internal.fevalMatlab

Error in connector.internal.fevalJSON

NR(th1,th2(i),th4,th3guess,th6,r1,r2,r3guess,r4guess,r5guess,r6);
 

 th3guess = th3;
 r3guess = r3;
 r4guess = r4;
 r5guess = r5;

 m(i,:) = [th3,r3,r4,r5];
end

function [th3,r3,r4,r5] =
NR(th1,th2,th4,th3guess,th6,r1,r2,r3guess,r4guess,r5guess,r6)

Answer 1

[Voss]

Add ellipses (...) to the ends of lines when you want to continue the statement to the next line:

clc; clear;

tic

n = 360;

r1 = 3.3;
r2 = 0.82;
r6 = 1.85;
rcg3 = 2.12;

th1 = pi/2;
th2 = linspace(0,2*pi,n);
th4 = 0;
th6 = 63*(pi/180);

% formulation
th3guess = -1.5; 
r3guess = 4.2;
r4guess = 1.2;
r5guess = 2;

m = zeros(n,4);

for i = 1:n
 
 [th3,r3,r4,r5] = ...
NR(th1,th2(i),th4,th3guess,th6,r1,r2,r3guess,r4guess,r5guess,r6);
 

 th3guess = th3;
 r3guess = r3;
 r4guess = r4;
 r5guess = r5;

 m(i,:) = [th3,r3,r4,r5];
end

function [th3,r3,r4,r5] = ...
NR(th1,th2,th4,th3guess,th6,r1,r2,r3guess,r4guess,r5guess,r6)
% stuff goes here
th3 = 0;
r3 = 0;
r4 = 0;
r5 = 0;
end

Answer 2

[Walter Roberson]

clc; clear;

tic

n = 360;

r1 = 3.3;
r2 = 0.82;
r6 = 1.85;
rcg3 = 2.12;

th1 = pi/2;
th2 = linspace(0,2*pi,n);
th4 = 0;
th6 = 63*(pi/180);

formulation

Unrecognized function or variable 'formulation'.

th3guess = -1.5; 
r3guess = 4.2;
r4guess = 1.2;
r5guess = 2;

m = zeros(n,4);

for i = 1:n
 
 [th3,r3,r4,r5] = ...
NR(th1,th2(i),th4,th3guess,th6,r1,r2,r3guess,r4guess,r5guess,r6);
 

 th3guess = th3;
 r3guess = r3;
 r4guess = r4;
 r5guess = r5;

 m(i,:) = [th3,r3,r4,r5];
end

function [th3,r3,r4,r5] = ...
NR(th1,th2,th4,th3guess,th6,r1,r2,r3guess,r4guess,r5guess,r6)
  th3 = rand();
  r3 = rand() * 10;
  r4 = rand() * 100;
  r5 = rand() * 1000;
end