题目内容
已知f(x)=解析:当k=2n(n∈Z)时,
f(x)=
-
+
-![]()
=
-
+
-![]()
=
-
+
-![]()
=-1-1-1+1=-2;
当k=2n+1(n∈Z)时,
f(x)=
-![]()
=![]()
=
+
-![]()
=1+1-1+1
=2.
练习册系列答案
相关题目
题目内容
已知f(x)=解析:当k=2n(n∈Z)时,
f(x)=
-
+
-![]()
=
-
+
-![]()
=
-
+
-![]()
=-1-1-1+1=-2;
当k=2n+1(n∈Z)时,
f(x)=
-![]()
=![]()
=
+
-![]()
=1+1-1+1
=2.