设f(x)是定义在0到正无穷大上的增函数,且对一切x.y>0满足f(x/y)=fx-fy
求f(1)的值 若f(2)=1,解不等式f(x+3)-f(1/x)
人气:164 ℃ 时间:2019-09-27 15:16:39
解答
(1)
∵对一切x.y>0满足f(x/y)=fx-fy
∴当x=y时f(x/y)=f(x/x)=f(1)=fx-fx=0
∴f(1)=0
(2)
∵f(x/y)=fx-fy
f(x+3)-f(1/x)
推荐
- 设f(x)是定义在0到正无穷大上的增函数,且对一切x.y>0满足f(x/y)=f(x)-f(y)
- 若f(x) 是定义在(0,正无穷大)上的增函数,且对一切x,y>0,满足f(x/y)=f(x)-f(y)
- fx是定义在(0,正无穷)上的增函数,且f(x/y)=fx-fy求f1 若f6=1,解不等式f(x+3)-f(1/x)<2
- 若f(x)是定义在(0,+无穷大)上的增函数,且对于x>0满足f(x/y)=f(x)-f(y).
- 定义域在(负无穷大-正无穷大)上的函数fx,对任意的x,y属于R都有f(x+y)=fx+fy+1成立.
- Likes a person is really very easy,I ask myself,I like her semblance?May have the friend said nearby own ear that she di
- among和 in the middle of 区别
- 好文章是滋味甘醇的美酒,让人回味无穷;好文章是········
猜你喜欢