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

: E& c' A) G( P4 G' Bclc
clear
syms thetal1 thetal6 thetal4 thetal5 thetal8 s r
thetal1set=[90:1:120];
' M0 s" l: {6 c+ P4 A4 N0 a; tthetal2=348;
8 S3 @- R: n% k1 n: ^thetal3=12;
thetal8=12;
3 N; r! B, Y; L: Fthetal6=zeros(size(thetal1set));
thetal4=zeros(size(thetal1set));
thetal5=zeros(size(thetal1set));
8 M) v4 ]/ z# }! bthetal8=zeros(size(thetal1set));
s=zeros(size(thetal1set));
r=zeros(size(thetal1set));
: L! |* C5 ]6 ~$ Da=0.55;
b=0.89;
; L9 P* c# P6 Z6 Bl1=0.19;
l2=0.38;
; D% I( o3 F: C2 ^+ l, c- ^l4=1.007;
+ Q8 P" T4 z, k7 B- ^* H2 ll5=0.15;
l7=0.45;
8 s( s9 g: w) y8 U! g3 \l8=0.22;
9 c5 f% n  o0 Ul9=0.18;
f2=2034/4*cos(12*2*pi/360)*0.4*2;
for i=1:1:numel(thetal1set)
    thetal1=thetal1set(i);
. N* ?) j6 J9 W6 v/ ~: q    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);
    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;
. X) M  Z$ b& W$ W' |: b: r( F    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;
    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);
- J8 s( d5 z& v: @; i    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])
    thetal6(i)=double(sol.thetal6);
    thetal4(i)=double(sol.thetal4);
    thetal5(i)=double(sol.thetal5);
' ^3 @8 y  {4 Z7 D    thetal8(i)=double(sol.thetal8);
1 h  a/ b  I# r+ A: e   s(i)=double(sol.s);
   r(i)=double(sol.r);
* N& A5 t/ R2 c  ~1 Y    t=sqrt(l1^2+r^2-2*l1*r*cos(thetal1*2*pi/360+thetal8*2*pi/360));
# Q9 w7 V4 l: u" H    thetal7=acos((l4^2+t^2-l5^2)/(2*l4*t))+acos((l1^2+t^2-r^2)/(2*l1*t));
: ^: |9 E  N6 i* @9 O  K; b  ?4 }    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
5 M7 I- M" z) I8 r7 oplot(thetal1,F)
xlabel('角度/。');
ylabel('缓解力/N');
hold on
& C" N  z5 Y7 j' b! O6 N0 Ngrid on
. g5 O! {  ?/ Q6 O( {

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modengxian111

问题解决了吗