3(2-3t)-4(3t-1)
参考身高: 2T 3T 4T 5T 6T 8T是什么意思
(t+3t²-3)-(-t+4t²)
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
3(2-3t)-4(3t-1)
解方程:4:5t=2:(3t-1)
(1-t)^3=1-3t+3t^2-t^3?如何化简得
参数方程x=t+1/t-1 y=2t/t^3-1
h(t)=5t^3+30t^2+45t+4
(t+3t²-3)-(-t+4t²),其中t=-1,怎么化简,怎么求值?
2t+1/2×0.01×t²=3t经过哪几步化为0.01t²-2t=0?
将参数方程x=2-3t/1+t,y=1+4t/1+t(t为参数)化为普通方程
2t²+3t²-(3t²+5t-t²)