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matlab积分怎么积分? i=1:0.01:pi;6 b5 Y4 B" n4 p6 ]4 u0 D
x=1:0.01:pi;) V4 ~) o: W* G6 s/ Z; C$ k0 H
N1=13;3 [' b& s. x3 l% M
" N: [ H+ h1 H/ B$ b( ^8 aN2=15; for i=1:pi+1
! R0 r6 V/ R; I8 X5 t" h! p if 0.4*pi+1<=x(i)+1 && x(i)+1<=0.6*pi+1
8 e6 j% f* t! r, @ phi_2(i)=(N2-N1)*x(i)+1/2;
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if 0.0*pi+1<=x(i)+1 && x(i)+1<=0.2*pi+1$ \ B# b' o6 A
phi_2(i)=((N2-N1)*x(i)+1+pi)*0.5;
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end
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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);
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