2)
f(t?1)?(t?1)5)
f(1?2t)
(
(6)
f(0.5t?2)df(t)(7)dt
8)
?t??f(x)dx
1-7 已知序列
f(k)的图形如图1-7所示,画出下列各序列的图形。
(1) (3) (5)
f(k?2)?(k) (2)f(k?2)?(k?2)
f(k?2)[?(k)??(k?4)] (4)f(?k?2) f(?k?2)?(?k?1) (6)f(k)?f(k?3)
解: