Have a problem on my code could you help me? URGENT

a2=28
ctheta3=cos(1:1:360)
stheta3=sin(1:1:360)
a3=39
stheta2=sin(1:1:360)
ctheta2=cos(1:1:360)
s=(a2*ctheta2)+(a3*ctheta3)
e=-((a2*stheta2)+(a3*stheta3))

subplot(3,2,1),plot(s,'c'),xlabel('Posición'),ylabel('Tiempo'),title('Grafica de posición s','FontSize',12)
subplot(3,2,2),plot(e,'r'),xlabel('Posición de e'),ylabel('Tiempo'),title('Grafica de posición e','FontSize',12)
DCt3=diff(ctheta3)
DSt3=diff(stheta3)
DCt2=diff(ctheta2)
DSt2=diff(stheta3)
W3=(a2*DCt2)./(a3*ctheta3)
subplot(3,2,3),plot(W3,'g'),xlabel('Velocidad de theta3'),ylabel('Tiempo'),title('Grafica de velocidad angular de theta3','FontSize',12)

Matrix dimensions must agree.

my problem is when i want to get W3 from the math equations!

[Gerard Nava]

a2=28

ctheta3=cos(1:1:360)

stheta3=sin(1:1:360)

a3=39

stheta2=sin(1:1:360)

ctheta2=cos(1:1:360)

s=(a2*ctheta2)+(a3*ctheta3)

e=-((a2*stheta2)+(a3*stheta3))

subplot(3,2,1),plot(s,'c'),xlabel('Posición'),ylabel('Tiempo'),title('Grafica de posición s','FontSize',12)

subplot(3,2,2),plot(e,'r'),xlabel('Posición de e'),ylabel('Tiempo'),title('Grafica de posición e','FontSize',12)

DCt3=diff(ctheta3)

DSt3=diff(stheta3)

DCt2=diff(ctheta2)

DSt2=diff(stheta3)

W3=(a2*DCt2)./(a3*ctheta3)

subplot(3,2,3),plot(W3,'g'),xlabel('Velocidad de theta3'),ylabel('Tiempo'),title('Grafica de velocidad angular de theta3','FontSize',12)

[Image Analyst]

No, don't double space code to get it to properly format. Highlight it and THEN click the {}Code icon:

TUTORIAL: how to format your question with markup

[Walter Roberson]

http://www.mathworks.com/matlabcentral/answers/29922-why-your-question-is-not-urgent-or-an-emergency

Answer 1

[Image Analyst]

Usually with diff() people prepend a zero

DCt2 = [0, diff(ctheta2)]

[Gerard Nava]

You Are Awesome , Thanks A lot ! , Wish you the best !

Answer 2

[Gerard Nava]

In DCt2 i have 359 elements and in ctheta3 i have 360 elements, how do i arrange the elemnts in 359 in order to be 360, should i add a 1 in its matrix ?, if so , how fo i write that part of the code of DCt2