设f(xx-1)=logxx/xx-2且f(g(x))=logx,求g(x)
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设f(xx-1)=logxx/xx-2且f(g(x))=logx,求g(x)
7/xx+x+1/xx-1=2/xx-x
解方程1/(xx+x)+1/(xx+3x+2)+1/(xx+5x+6)+1/(xx+7x+12)+1/(xx+9x+20)=5/(xx+11x-708)
设函数f(x-y,y/x)=x*2-y*2,则f''xx=这就是原题,f''xx ”还是“ fxx''
已知f(x)=xx+2 ,则f(x+1)等于多少
xx+2xy+yy=1 xx-2xy+yy=49 求xx+yy,xy.
已知:3x=xx-x+1求(xxxx+xx+1)分之xx
7/(XX+X)+1/(xx-x) =6/(xx-1)
解分式方程7/(XX+X)+1/(xx-x) =6/(xx-1)
7/(XX+X)+1/(xx-x) =6/(xx-1)
已知(XX+YY—2)(XX+YY)=3,求XX+YY
解方程:3x/(xx-1)+(xx-1)/3x=5/2
已知f(x)=3x-2xx+kx-4能被x+1整除,求k的值xx为x的平方
题目是 (1) XX*X=XX X*X=XX X为未知数分别将1到9的9个数填入不能重复 *为乘号 (2)XX/X=X X/X=XX/ X X为
f(x)满足f(x+2)=-f(x)且x∈(-1,1】时 f(X)=x²+2xx∈(3.5】f(x)的解析式π/2
函数f(x)=xx-2x-1,x大于等于1且f(x)=2x-2,x小于1,求f(x+1)
已知函数f(x)满足f(2x+1)=xx+x,求f(x)
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