t=0:10000; u=5000; m=1; y=exp(-(t/u).^m); f=y*((t/u).^(m-1))
t=0:10000; u=5000; m=1; y=exp(-(t/u).^m); f=y*((t/u).^(m-1))
LTI系统输入为f(t)=δ(t) +δ( t− 1),响应为y(t)=u(t)-u(t-1),求该系统单位
u=f(x-y,y-z,t-z)
己知z=f(u),u=ψ(u)+∫(y,x) p(t)dt,其中f(u)可微,p(t),ψ(u)连续,且ψ'(u)≠1,
在matlab中如何用laplace变换求解微分方程u''(t)-u=exp(t),y(0)=0,y'(0)=0
matlab 指数曲线拟合:y=112*[m*exp(b*t)+n*exp(c*t)
设函数u=u(x,y),由方程组u=f(x,y,z,t),g(y,z,t)=0,h(z,t)=0定义,求u对y的偏导
char r[20]={'I','a','m',' ','s','t','u','d','e','n','t','\0'
x=e^-t y=∫(0到t)ln(1+u^2)du
1 m,l,f,i,a,y=?2 n,l,o,i=?3 j,i,e,u,c=?4 a,f,e,r,t,h=?5 m,o,
高一集合题刚学求解答已知:S={x|x=14m+36n,m,n∈Z}T={y|y=10u+6v,u,v∈Z}求证:S=T
信号与系统MATLAB实验画出f (t) = (1+ cosπt)[u(t) − u(t − 2