函数f(x)是奇函数,g(x)是偶函数且f(x)+g(x)=1/(x+1)(x≠±1),则f(-3)=
来源:学生作业帮助网 编辑:作业帮 时间:2024/12/01 12:55:33
x){ھ
ifI
4n<1F$nkQmQs:O;fik$SH;3MXt05P*su
tnEUc=gxt{fA5ַ/.H̳z ݍ`OXg
@0 ź A3ҐasVٟ .+
函数f(x)是奇函数,g(x)是偶函数且f(x)+g(x)=1/(x+1)(x≠±1),则f(-3)=
函数f(x)是奇函数,g(x)是偶函数且f(x)+g(x)=1/(x+1)(x≠±1),则f(-3)=
函数f(x)是奇函数,g(x)是偶函数且f(x)+g(x)=1/(x+1)(x≠±1),则f(-3)=
f(3)+g(3)=1/4
f(-3)+g(-3)=-1/2,即-f(3)+g(3)=-1/2
两式相减得:f(3)=3/8
h(x)=f(x)+g(x)=1/(x+1
由奇偶性
h(-x)=-f(x)+g(x0=1/(-x+1)
相减
2f(x)=1/(x+1)-1/(-x+1)
2f(-3)=-1/2-1/4=-3/4
f(-3)=-3/8