已知函数f(x)=m/x-1(x≠0),且f(1)·f(1/2)=3,求m的值

Question

已知函数f(x)=m/x-1(x≠0),且f(1)·f(1/2)=3,求m的值

Answer 1

f(1)=m-1,f(1/2)=2m-1,所以（m-1）（2m-1）=3得出2m^2-3m-2=0,m=2或者-1/2