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matlab积分怎么积分? i=1:0.01:pi;% }, a. a/ N N; \5 [# D0 v, K
x=1:0.01:pi;& `4 p* [( G# V
N1=13;
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# G ^; g, {+ m: UN2=15; for i=1:pi+1- X+ C: P! @/ z" _
if 0.4*pi+1<=x(i)+1 && x(i)+1<=0.6*pi+1 t9 K) c) Z1 O7 Y
phi_2(i)=(N2-N1)*x(i)+1/2;. z1 |! L7 e3 Z$ e% t8 X, _
end
7 x; \( U2 S( Z3 c7 Y. l$ H if 0.0*pi+1<=x(i)+1 && x(i)+1<=0.2*pi+1
2 e2 @4 G+ g' V2 D ]* A' y phi_2(i)=((N2-N1)*x(i)+1+pi)*0.5;, [5 d+ \/ D3 k* T- i$ M
4 t: Q9 f5 v2 ]5 C. u5 t9 M
end
( B9 P9 h" P8 e* \7 d- C( lend syms i;' ]: r$ k# O) I! G# U1 _* A
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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