请教matlab积分怎么积分？？？

littlestupid

matlab积分怎么积分？                         

i=1:0.01:pi;
1 q8 U8 s3 E# X% L& s9 J2 kx=1:0.01:pi;
5 o% ?7 ^- x# }" ]0 D& F# k& j2 SN1=13;
, Z) Z; D5 V: q8 a
: C8 W5 P' _$ K4 TN2=15;

for i=1:pi+1
, {4 M& u1 o2 [; u, l. T: k   if 0.4*pi+1<=x(i)+1 && x(i)+1<=0.6*pi+1
3 f6 i/ t. Y4 R5 l& W   phi_2(i)=(N2-N1)*x(i)+1/2;
   end
5 Y, K" n6 E2 z+ \/ P' e( O    if 0.0*pi+1<=x(i)+1 && x(i)+1<=0.2*pi+1
    phi_2(i)=((N2-N1)*x(i)+1+pi)*0.5;
; R0 r& @: \8 z
    end
: D8 h5 B. I6 {* z7 Wend

syms i;
, T. n/ z8 W: |# f; o. H7 ~Er=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);

loveeatmore

是同行，只是我是菜鸟