已知函数y=f(x)满足2f(x)+f(½)=2x,x∈R且x≠0,求f(x)
已知函数f(x)满足f(x+y)+f(x-y)=2f(x)f(y)(x∈R,y∈R),且f(0)≠1.
已知函数f(x)满足f(0)=1,且对x,y∈R,恒有f(x+y)+f(x-y)=2f(x)*cosy.求f(x)
已知函数f(x)满足2f(x)+f(1/x)=2x,且x∈R,≠0,则f(x)=
已知二次函数f(x)满足f(x+1)-f(x)=2x+1 (x∈R),且f(0)=1,判断f(x)的奇偶性
已知函数y=f(x)(x≠0)对于任意x,y∈R,且x,y≠0.满足f(xy)=f(x)+f(y)
已知函数f(x)满足:对任意x,y∈R,都有f(x+y)=f(x)•f(y)-f(x)-f(y)+2成立,且x>0时,f
已知二次函数f(x)满足f(0)=0,且对任意x∈R总有f(x+1)=f(x)+x+1,g(x)=2f(-x)+x,求f
已知2次函数y=f(x),满足f=(0)=1且有f(x+1)=f(x)+2x,求f(x)
已知函数f(x)满足f(x+y)+f(x-y)=2f(x)•f(y) (x∈R,y∈R),且f(0
已知函数定义在R上的偶函数f(x)满足f(x+2)乘f(x)=1,且f(x)大于0,求f(119),
已知函数f(x)的定义域为R,且满足f(x)+2f(-x)=6x平方-3x+3 ,求f(0)
已知函数满足对任意xy属于R都有f(x+y)=f(x)*f(y)-f(x)-f(y)+2成立,且x2,证明x