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matlab积分怎么积分? i=1:0.01:pi;
' t K# O3 l6 m5 yx=1:0.01:pi;
3 `# k. a' m" L iN1=13;! e+ k- U9 Z" ~) D9 V
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N2=15; for i=1:pi+1
" J' G3 H% q: _; l6 R' A F if 0.4*pi+1<=x(i)+1 && x(i)+1<=0.6*pi+1 }8 W/ G' f* n& x# _+ ?! Y4 D
phi_2(i)=(N2-N1)*x(i)+1/2;7 h+ m; W& N3 z6 |) i0 p
end
' V" p4 A' M4 W0 S if 0.0*pi+1<=x(i)+1 && x(i)+1<=0.2*pi+1
' m3 c) t, }4 B: m. i$ `! i7 C phi_2(i)=((N2-N1)*x(i)+1+pi)*0.5;7 V! \; v. [+ s# x3 {
( m: U* V9 }- _, c- K" S
end
; C- h2 |9 p/ R i$ Lend syms i;
9 ]& m O! B; W: CEr=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 A5 _7 `8 Y& \+ G1 }% X" {" { | |