The function you've provided is ( f(x) = x - 2x ).
To simplify this function, combine like terms:
[ f(x) = x - 2x = (1 - 2)x = -x ]
So, the simplified form of the function is:
[ f(x) = -x ]
This means that for any input value ( x ), the function will output the negative of that value. For example:
Is there anything specific you would like to know about this function?
f(x)=x-2x³是 ( )
A.奇函数
B.偶函数
C.非奇非偶函数
D.无法判断
A
f(-x)=-x-2(-x)³=-x+2x³=-f(x),所以是奇函数.