matlab求sin(0.125*pi*n)的序列傅里叶变换!只要能画出图就行了,是个周期离散冲激图,

matlab求sin(0.125*pi*n)的序列傅里叶变换!只要能画出图就行了,是个周期离散冲激图, sin(pi*t)/(pi*t)怎么用matlab实现 用matlab绘出sin(pi*t)/(pi*t)弦波图 matlab rotate程序求大神修改t=0:pi/1000:3.5*pi;k=fix(2*t/pi)+1;x=0.5*sqrt(2)*cos(0.5*k*pi+0.25*pi)+k.*cos(t);y=0.5*sqrt(2)*sin(0.5*k*pi+0.25*pi)+k.*sin(t);h=plot(x,y,'r');m=pi:pi/20:4.5*pi;n=fix(2*m/pi)-1;x0=2*cos(1.25*pi);y0=2*sin(1.25*pi);x2= matlab求sin(pi)这是matlab运算结果,不应该是-1么?我知道了,大意了,答案的确应该是0,只不过pi=3.1416,而不是3.1415926.. ​ matlab 解隐函数方程,用matlab求x 怎么求不出来?已知方程（2*pi*0.00152)/0.00000063)*((1+*0.00152*(sin((2*pi*x)/0.00000063))^2)^(-2))*(sin(4*pi*x)/0.00000063)=y 急!matlab,求大神解答x=solve('9530*(sin(pi*x)^3)/pi+14300*x*(1-sin(2*pi*x)/(2*pi*x))/(1.25-3*x)*(sin(pi*x)+sin(pi*(1.25-2*x))/pi-983.04=0','x')想求解这个含三角函数的一元三次方程,但显示Error using ==> solve is not a valid expr matlab提示Error:Incomplete or misformed expression or statement.x=0:2*pi:100;s=20*(4*x/pi-(1/(2*pi))*sin(8*pi*x/pi);plot(x,s);求指导. 求教matlab遗传算法问题f(x,y)=sin(pi*x)/(pi*x)*sin(pi*y)/(pi*y)x,y=[0,8],求maxf(x,y)用遗传算法怎么可以求解? 用matlab解方程组,x,y为已知列向量,求a,bx = 500*sin(a*pi/180)+400*sin((a+b)*pi/180)y = 500*cos(a*pi/180)+400*cos((a+b)*pi/180) 解方程：sin(2*a)/pi+(pi-a)/pi=0.8,最好能给出matlab程序. MATLAB那出错了,画出来的是一条直线,m为一个值,求大神回答t=0:0.01:1;m=-((2*pi*sin((2*pi*t)/9))/9-(5*pi*sin((pi*t)/180))/18)/((2*pi*cos((2*pi*t)/9))/9-(5*pi*cos((pi*t)/180))/18);plot(t,m); x_t=sin(2*pi*f1*t)+sin(2*pi*f2*t)+sin(2*pi*f3*t);n_t=wgn(1,M,0),r_t=x_t+n_t,用matlab求 r_t方差均值均方值 求sin(pi*t)/(pi*t)的fourier变换,用matlab或者直接算均可,最好有程序或者计算步骤 matlab 计算sin(pi/7)+ln3-e^j*3 如何用matlab实现sin(pi*n/2)的DTFT matlab 请问0=pi-0.8*sin(x+atan(4))+22.5*t-x怎么求x啊如题.我没学过matlab有人能帮帮忙么? matlab如何输入如下式子?matlab如何输入如下式子x=0:pi/100:pi;>> y=1/(sin(x)+0.125*sin(2*x));Error using ==> mrdivideMatrix dimensions must agree.