22x22=484 222x22=4884 .总结规律
11x22+0.22x3300+330x4.4=
#include void main() { char i,m; while(i>5) { P1=0x22; m=P1>
model: min=800*x11+1000*x12+1200*x13+700*x21+500*x22+700*x23
请问气体摩尔质量 n=密度x22.4这个公式是怎么来的啊?
式子找规律2=1X22+4=2X32+3+4=3X42+3+4+5=4X5……根据上面的规律算出102+104+106+
99.99X22.22十33.33X33.34用巧算,急
99.99x22.22+33.33x33.34要过程
99.99x22.22+33.33x33.34简便计算
99.99X22.22+33.33X33.34怎么简算?
99.99X22.22+33.33X33.34怎么简算
已知实数x1、x2满足x12-6x1+2=0和x22-6x2+2=0,则x
已知一组正数x1,x2,x3,x4,x5,的方差为:S2=(x12+x22+x32+x42+x52-20)