4t-8/15t x 5t^2/6-3t

4t-8/15t x 5t^2/6-3t 4t-8/15t x 5t^2/6-3t 参考身高: 2T 3T 4T 5T 6T 8T是什么意思 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),'.') Y(t)=3t^2-3t X(t)=4t^2-6t^3+5t 求Y(x)=? 5t-3≤4t-1 7+2t>6+3t 3+t 5t-3≤4t-1 7+2t>6+3t 3+t (t^5+t^4+t^3+t^2+t+1)(t-1) 用直式计算 (t+3t^2-3)-(-t+4t^2) 化简 （t+3t^2-3)-(-t+4t^2) 化简 (2t+3)(2t-)-(4t+1)(t-9) 通分问题（1）3t/4t-6,t+1/4t平方-9（2）3x/x平方-2x,2x+1/4-x平方,3/2x平方+4x（1）3t/4t-6,t+1/4t²-9（2）3t/4t-6,t+1/4t²-9 已知｛x=3t^4+6t,y=t^3-3t｝ 求导数 (t^m)^2*t (x^4)^6-(x^3)^8急这两题不会写(t^m)^2*t (x^4)^6-(x^3)^8要有过程 谁知道化简求值4t²-8t+5-3t²+6t-2,其中t=½.得多少?//?// x=2t-t*t y=3t-t*3的拐点是什么? matlab中怎么对下面的程序进行二维插值并画出三维视图呢?[x,y]=meshgrid(-2:1:2);t=2;Z=[(sin(t))^3 t^2 sin(t) cos(t) (sin(t))^2;t^2 sin(t) (cos(t))^4 cos(t) (sin(t))^2;t sin(t) cos(t) t^2 (sin(t))^2;sin(t) (cos(t))^3 t^2 (sin(t))^2