L14A
00:00 Definition of generating function
02:00 Remark
06:10 Examples
12:35 Definition and remark of formal derivative
L14B
00:00 Example of formal derivative
09:20 Example of convolution
L14C
00:00 Review
00:40 Example of inverse
12:00 Extended binomial theorem
L14D
00:00 Example of extended binomial theorem
04:50 Definition of extended binomial coefficient
13:20 Extended binomial theorem
15:00 Proof
20:10 Example