17.6-7.6X1.4-5.36能简算就简算
17.6-7.6X1.4-5.36能简算就简算
m-X1^2/4=X1/2(X0-X1)
1x1\3+2x1\4+3x1\5+.+2006x1\2008的简便算法
能简算就简算.3/20÷2/5-1/5X1/4
提问:1x1/2+1/2x1/3+1/3x1/4+1/4x1/5+1/5x1/6+1/6x1/7 用简便方法
“(1/4x1/6+1/6x1/8+1/8x1/10+1/10x1/12)x2的简便方法
min=(4*x1^2+2*x2^2+4*x1*x2+2*x2+1)*exp(x1);
x1-x2)+x1x2分之4(x2-x1)怎样化简成((x1-x2)(1-x1x2分之4)
min=19.7*0.93*x1+23.4*0.3*x2; min=0.4025*x1+0.155*x2;5*x1+4*
8+(x-4)x1.7=25
求非齐次线性方程组:2x1-x2+4x3-3x4=-4;x1+x3-x4=-3;3x1+x2+x3=1;7x1+7x3-
求和2x1/2+4x1/4+6x1/8+8x1/16+…+2nx1/2^n要详解答案,急用!