x(t)=cos(2*pi*5*t)+cos(2*pi*10*t)+cos(2*pi*20*t)+cos(2*pi*50*t)傅立叶变换的matlab程序要求生成频谱图
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Matlab u(x,t)=sin(5*pi*x)cos(5*pi*t)+2sin(7*pi*x)cos(7*pi*t) 其中0
x(t)=cos(2*pi*5*t)+cos(2*pi*10*t)+cos(2*pi*20*t)+cos(2*pi*50*t)傅立叶变换的matlab程序要求生成频谱图
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t1=input('t1=') w=50/3*pi a=2/3*pi for t=0:0.0001:t1 b=2*w*(pi-a)*t/pi c=cos(2/3*pi+b) d=sin(2/3*pit1=input('t1=')w=50/3*pia=2/3*pi for t=0:0.0001:t1b=2*w*(pi-a)*t/pic=cos(2/3*pi+b)d=sin(2/3*pi)h=cos(2/3*pi)[x,y,z]=solve('x^2+y^2+z^2=100^2+170^2','x^
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matlab参数方程绘图问题t=0:pi/1000:3*pi k=fix(2*t/pi)+1; y=0.5*sqrt(2)*sin(0.5*k*pi+0.25*pi)+k*sin(t); x=0.5*sqrt(2)*cos(0.5*k*pi+0.25*pi)+k*cos(t); plot(x,y) axis equal 为什么不能运行啊,
matlab中t=linspace(0,2*pi,100);x=[t;t]';y=[sin(t);cos(t)]';plot(x,y),
用MATLAB研究莫尔斯码的幅度调制与解调.本题研究莫尔斯码的幅度调制与解调.本题中信号的形式为(1)x(t)=m1(t)cos(2*pi*f1*t)+m2(t)cos(2*pi*f2*t)+m1(t)cos(2*pi*f2*t)其中信号x(t)由文件ctftmod.mat定义,可用命
这个函数的周期是?f(x)=cos[2(pi)t]+(sin10t)
x=4*sin(2*pi*0.01*t).*sin(2*pi*3*t)+2*cos(pi*t*t/4);在matlab中怎样表达运行出现错误:Error using ==> mtimesInner matrix dimensions must agree.
MATLAB求助,用FFT直接计算x=cos(2*pi*40*t)+2sin(2*pi*120*t)+w(t)的功率谱.用FFT直接计算x=cos(2*pi*40*t)+2sin(2*pi*120*t)+w(t)的功率谱.最好带上注释,
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