请教matlab积分怎么积分？？？

littlestupid

matlab积分怎么积分？                         

i=1:0.01:pi;
x=1:0.01:pi;
N1=13;
  g* ^9 b/ V* s' ^) z
- B6 u3 W1 R8 ^% T) J# IN2=15;

for i=1:pi+1
5 T% V! ?2 ?5 |- J3 t/ O   if 0.4*pi+1<=x(i)+1 && x(i)+1<=0.6*pi+1
   phi_2(i)=(N2-N1)*x(i)+1/2;
   end
, g0 Z. O  `7 [' o    if 0.0*pi+1<=x(i)+1 && x(i)+1<=0.2*pi+1
1 K1 C7 ~3 n+ k, F; [) a    phi_2(i)=((N2-N1)*x(i)+1+pi)*0.5;
. v& |: E: H8 Z  s) H; K  I
    end
# ~; ^7 c. `+ I% X: Rend

syms i;
9 a& r# F4 t1 b7 x/ h0 oEr=1-abs(exp(1j*(phi_2(i)-((N1+N2)/2)*i)).*cos(((N2-N1)/2)*i-phi_2(i) )).^2;

s=int((Er),0.4*pi,0.6*pi);

1 P/ `9 I8 ?" z# j1 V% i2 ^

loveeatmore

是同行，只是我是菜鸟