Example 1.18
Find F (x) for the following:
F (x) = 0x (x − t)u(t)dt. (1.117)
Applying the reduced Leibnitz rule (1.116) yields
F (x) = 0x u(t)dt. (1.118)
Example 1.19
Find F (x) and F (x) for the following:
F (x) = 0x xtu(t)dt. (1.119)
Applying the reduced Leibnitz rule (1.116) gives
2 x
F (x) = x u(x) + tu(t)dt,
0 (1.120)
2
F (x) = x u (x) + 3xu(x).