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matlab积分怎么积分? i=1:0.01:pi;% _8 w c3 t7 d$ M& E w
x=1:0.01:pi;
: e! l( f0 [% u( n9 fN1=13;
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N2=15; for i=1:pi+1! J' T' \+ E; L$ K4 l
if 0.4*pi+1<=x(i)+1 && x(i)+1<=0.6*pi+1
& Q* K, V/ [" ~; s! @ phi_2(i)=(N2-N1)*x(i)+1/2;" f& P9 |: x3 W V+ i: q
end( z h* q( \2 e5 g
if 0.0*pi+1<=x(i)+1 && x(i)+1<=0.2*pi+1& u# S% B) I6 X% s$ b. h0 I
phi_2(i)=((N2-N1)*x(i)+1+pi)*0.5;
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end syms i;
( ^, {* d. m+ I$ {# @4 fEr=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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