3t²+10t=200 ,怎么算,急
解方程﹣3t²-2t+4=0,用因式分解法,
解方程t(t-2)-3t =0
上海这边sus304(1.2T 2T 3T 4T 6T 10T)和sus202(1.2T 1.5T)的不锈钢板价格在多少
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t=0:pi/100:10*pi; x=2*(cos(t)+t*sin(t)); y=2*(sin(t)-t*cos(t
matlab问题,>> t=0:0.2:3*pi;x=exp(-t).*sin(t);plot(t,x) >> t=0:
一个MATLAB题 画出Y(T)=-3T^2+5 T>=0;3T^2+5 T
2t+1/2×0.01×t²=3t经过哪几步化为0.01t²-2t=0?