这个程序报错，各位大神能帮我看下嘛，我是想求thetal1的变化和F的关系

玛克博罗

! Y- N% x2 F5 i# s
clc
clear
' u' e7 [9 n) f+ ]5 W& ]  Csyms thetal1 thetal6 thetal4 thetal5 thetal8 s r
! T4 `/ @. H- Z, {thetal1set=[90:1:120];
/ l3 p' N2 r/ C0 ]* y5 Tthetal2=348;
+ P/ ^9 _) Y3 _' _0 {5 ethetal3=12;
thetal8=12;
  T  D9 q2 d, f! }, ^8 N# z: vthetal6=zeros(size(thetal1set));
! }; W0 |' o+ J& M: Ethetal4=zeros(size(thetal1set));
thetal5=zeros(size(thetal1set));
" k) O; A" g+ G! @thetal8=zeros(size(thetal1set));
- I& @" P$ l, B2 {( Q6 \1 os=zeros(size(thetal1set));
! j+ V/ L/ g3 h0 [! s6 ^r=zeros(size(thetal1set));
a=0.55;
* E0 n- m, m! v9 U8 w! \b=0.89;
l1=0.19;
l2=0.38;
l4=1.007;
8 b, P0 W, ?& [- a, O: Jl5=0.15;
l7=0.45;
l8=0.22;
l9=0.18;
f2=2034/4*cos(12*2*pi/360)*0.4*2;
for i=1:1:numel(thetal1set)
    thetal1=thetal1set(i);
    eq1=l4.*cos(thetal6*2*pi/360)+l1.*cos(thetal1*2*pi/360)==l5.*cos(thetal4*2*pi/360)+s.*cos(thetal3*2*pi/360);
  v5 E1 S- k- G9 h# i; x    eq2=l4.*sin(thetal6*2*pi/360)+l1.*sin(thetal1*2*pi/360)==l5.*sin(thetal4*2*pi/360)+s.*sin(thetal3*2*pi/360)-l8;
1 B- z& ?& [8 J+ V6 D    eq3=l7.*cos(thetal4*2*pi/360)+l9.*cos(thetal5*2*pi/360)+s.*cos(thetal3*2*pi/360)==b;
    eq4=l7.*sin(thetal4*2*pi/360)+l9.*sin(thetal5*2*pi/360)+s.*sin(thetal3*2*pi/360)==l8+a;
4 M3 ]( K8 B9 B( q    eq5=l4.*cos(thetal6*2*pi/360)+l5.*cos(thetal4*2*pi/360+pi)+l1.*cos(thetal1*2*pi/360)==r.*cos(thetal8*2*pi/360);
    eq6=l4.*sin(thetal6*2*pi/360)+l5.*sin(thetal4*2*pi/360+pi)+l1.*sin(thetal1*2*pi/360)==r.*sin(thetal8*2*pi/360);
    sol=vpasolve([eq1,eq2,eq3,eq4,eq5,eq6],[thetal6,thetal4,thetal5,thetal8,s,r])
. u& q( p+ ?1 L% u9 U4 [% B1 v- Y    thetal6(i)=double(sol.thetal6);
: R  B3 I4 V- v5 E- E- j* l    thetal4(i)=double(sol.thetal4);
2 t' [* f; Q! m7 g; P9 _5 M    thetal5(i)=double(sol.thetal5);
/ R+ Y, c# Q3 @' ~  ]+ g    thetal8(i)=double(sol.thetal8);
0 ~: I$ A$ F, R+ y4 y- g   s(i)=double(sol.s);
# c" y6 }7 D( p' D   r(i)=double(sol.r);
5 V# x4 s) L  X- S0 C2 u( i    t=sqrt(l1^2+r^2-2*l1*r*cos(thetal1*2*pi/360+thetal8*2*pi/360));
  \6 {+ o0 O( N  t  M* \! N1 ^    thetal7=acos((l4^2+t^2-l5^2)/(2*l4*t))+acos((l1^2+t^2-r^2)/(2*l1*t));
& o9 Z1 C) j3 D8 D9 h0 G    F1=f2*l7*sin(thetal4*2*pi/360-thetal3*2*pi/360)/((l5*sin(pi-acos((l4^2+l5^2-t^2)/(2*l4*l5)))));
    F=F1*l1*sin(thetal7)/(l2*sin(pi-thetal1*2*pi/360));
end
plot(thetal1,F)
3 A8 n+ j( m6 Wxlabel('角度/。');
ylabel('缓解力/N');
! \1 j% L0 O. O! Nhold on
grid on

9 _0 b8 t: K. U6 Z/ P( a( W

modengxian111

问题解决了吗