1/x+1/y=a(x,y,z为未知数) 1/y+1/z=b 1/z+1/x=c 1/x+1/y=a1/y+1/z=b1/z+1/x=c,如果解出了,还会有补加悬赏分,鞠个躬,
问题描述:
1/x+1/y=a(x,y,z为未知数) 1/y+1/z=b 1/z+1/x=c
1/x+1/y=a
1/y+1/z=b
1/z+1/x=c,
如果解出了,还会有补加悬赏分,鞠个躬,
答
1/x+1/y=a----(1)
1/y+1/z=b----(2)
1/z+1/x=c----(3)
(((1)+(2)+(3))/2)-(1)
1/z=b/2+c/2-a/2
z=2/(b+c-a)
(((1)+(2)+(3))/2)-(2)
1/x=a/2+c/2-b/2
z=2/(a+c-b)
(((1)+(2)+(3))/2)-(3)
1/y=a/2+b/2-c/2
z=2/(a+b-c)
答
1/x+1/y=a----(1)
1/y+1/z=b----(2)
1/z+1/x=c----(3)
(((1)+(2)+(3))/2)-(1)
(((1)+(2)+(3))/2)-(2)
(((1)+(2)+(3))/2)-(3)
x=(a+c-b)/2;
y=(a+b-c)/2
z=(b+c-a)/2