1x1/2 2x1/3 3x1/4 ……2005x1/2006 2006x1/2007
1x1\3+2x1\4+3x1\5+.+2006x1\2008的简便算法
提问:1x1/2+1/2x1/3+1/3x1/4+1/4x1/5+1/5x1/6+1/6x1/7 用简便方法
min=2*x1+3*x2; x1+x2>=350; x1>=100; 2*x1+x2
float x1,x2; x1=3/2; x2=x1/2; printf("%d%.1f",(int)x1,x2); 输
m-X1^2/4=X1/2(X0-X1)
求非齐次线性方程组:2x1-x2+4x3-3x4=-4;x1+x3-x4=-3;3x1+x2+x3=1;7x1+7x3-
已知方程3x²-4x=-1的两根是x1 x2,不解方程,求:1.x2/x1 + x1/x2 2.(x1 - 2
min=(4*x1^2+2*x2^2+4*x1*x2+2*x2+1)*exp(x1);
lingo求解min=x1^2+x1*x2+x2^2-60*x1-3*x2;结果错误
已知x1和x1是方程2x2-2x-5=0的两个实数根,求代数式x1^3+3X1^2+0.5X1+6X2
设x1 x2 ……xn属于R+ 且x1+x2+……+xn=1求证 x1^2/(1+x1) +x2^2/(1+x2)+……
求和2x1/2+4x1/4+6x1/8+8x1/16+…+2nx1/2^n要详解答案,急用!