(5.2x1.1x2十3x1.1x2-1)x1怎么算
X2/X1(X1+X2)+X3/(X1+X2)(X1+X2+X3)+.Xn/(x1+x2+...Xn-1)(X1+X2.
已知X1*X2=1 ,X1+X2=3 ,求X1三次方+X2三次方
float x1,x2; x1=3/2; x2=x1/2; printf("%d%.1f",(int)x1,x2); 输
(x1-x2)+x1-x2/x1x2怎么就成了(x1-x2)(1-1/x1x2),
(x1-x2)+(x2-x1)/(x1x2)=(x1-x2)(x1x2-1)/x1x2 这一步怎么推出来的,
数学式子变形(x1+1/x1)-(x2+1/x2)=(x1-x2)+(1/x1-1/x2) 如何变形的
(x1-x2)+(x2-x1)/x1x2 = (x1-x2)(1- 1/x1x2)
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)
已知X1 X2为方程5X平方-3X-1=0且X1>X2求X1-X2
用图解法求线性规划?max z = x1+3x2 5x1+10x≤50 X1+X2≥1 X2≤4 X1,X2≥0
设x1,x2,...,xn为任意实数,求证:x1/(1+x1^2)+x2/(1+x1^2+x2^2)+...+xn/(1