上海有色金属网走势图:X+1/X=16.0625 X=? (请写过程)
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X+1/X=16.0625
即:
x^2+1=16.0625x
x=/=0
过程已写
求一元二次方程,x不等于0
已知x*x-3x+1=0,求x*x+1/x*x
解一元二次方程X*X+1/X*X+X+1/X=0
(x*x*x-x*x+x)/(x*x*x+1)+(x*x+x+1)/[(1-x*x)/x)]
(x*x*x-x*x+x)/(x*x*x+1)+(x*x+x+1)/[(1-x*x)/x)]
5x-2/(x+2)(x-2)-(x-1)(x+2)/(x+2)(x-2)=0
x*(x/3)=(x-5)*(x/3+1)/2 x=?
X^2-2X-1=0,X<0问X+1/X=?
已知x+1/x =4,则x^2/x^4+x^2+1
(x-4)(x-2)-(x-1)(x+3),其中x=-2/5
f(x)=2x(x-1)/(2x-3) x>2求最小值