(1/4+1/5+1/6)*1/T=74 求T
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(1/4+1/5+1/6)*1/T=74 求T
(1/4+1/5+1/6)*1/T=74 求T
(1/4+1/5+1/6)*1/T=74 求T
(15/60+12/60+10/60)*1/T=7437/60*1/T=7474T=37/60T=37/60/74T=1/120
=37/60乘以1/T
1/T=74乘以60/37
1/T=120
T=120
4t^-8t+5-3t^+6t-2 其中t=2/1
[T,Y]=ode45(@rigid,[0 1],[rand(15,1)]);plot(T,Y(:,1),'-',T,Y(:,2),'-.',T,Y(:,3),'.',T,Y(:,4),'-',T,Y(:,5),'-.',T,Y(:,6),'.',T,Y(:,7),'-',T,Y(:,8),'-.',T,Y(:,9),'.',T,Y(:,10),'-',T,Y(:,11),'-.',T,Y(:,12),'-.',T,Y(:,13),'.',T,Y(:,14),'-',T,Y(:,15),'.')
5t-3≤4t-1 7+2t>6+3t 3+t
5t-3≤4t-1 7+2t>6+3t 3+t
已知t >0,则函数y =(t*t-4t+1)/t的最小值
(t^5+t^4+t^3+t^2+t+1)(t-1) 用直式计算
画出下列信号的波形1)f(t)=tu(t); 2)f(t)=t[u(t)-u(t-2)]; 3)f(t)=(t-1)u(t-1); 4)f(t)=sint/t画出图形~
(1/4+1/5+1/6)*1/T=74 求T
(1/4+1/5+1/6)*1/T=74 求T
(1/4+1/5+1/6)*1/T=74 求T
(1/4+1/5+1/6)*1/T=74 求T
(1/4+1/5+1/6)*1/T=74 求T
(1/4+1/5+1/6)*1/T=74 求T
(1/4+1/5+1/6)*1/T=74 求T
(1/4+1/5+1/6)*1/T=74 求T
(1/4+1/5+1/6)*1/T=74 求T
(1/4+1/5+1/6)*1/T=74 求T
(1/4+1/5+1/6)*1/T=74 求T