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y( 0)=0.00000e+00 y( 1)=1.86090e-02 y( 2)=3.25359e-02 y( 3)=4.20480e-02 y( 4)=4.73684e-02 y( 5)=4.86842e-02 y( 6)=4.61538e-02 y( 7)=3.99123e-02 y( 8)=3.00752e-02 y( 9)=1.67423e-02 y(10)=0.

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Y + * * + *

y( 0)=0.00000e+00 y( 1)=1.86090e-02 y( 2)=3.25359e-02 y( 3)=4.20480e-02 y( 4)=4.73684e-02 y( 5)=4.86842e-02 y( 6)=4.61538e-02 y( 7)=3.99123e-02 y( 8)=3.00752e-02 y( 9)=1.67423e-02 y(10)=0.

y( 0)=5.40000e+01 yy( 0)=5.68429e+01 y( 1)=1.45000e+02 yy( 1)=1.33629e+02 y( 2)=2.27000e+02 yy( 2)=2.44057e+02 y( 3)=3.59000e+02 yy( 3)=3.47943e+02 y( 4)=4.01000e+02 yy( 4)=3.93457e+02

y='cos(w*t)' %定义1个余弦函数 G='(s+5)/s/(s+9)/(s+4) ' %定义1个传递函数 F='Dy+9*y-x/2' %定义1个一阶微分方程 X=sym('[x11,x12;x21,x22]') %定义1个符号矩阵

y=0:pi/4:pi

Y=WAVREAD('wtm_f3_18r78r.wav'); WAVPLAY(Y); plot(Y); title('声音信号(编写：骆遥)') xlabel('n') ylabel('Sound') grid on