Sorry for question 1, it is not but , sorry for the typo and thank you!
Hi I've some more questions, your help is greatly appreciated!
1.) and the sum of it's coefficients is 1, what is the sum of the coefficients of
I really have no idea how to start, can't see any patterns..
2a.) Prove that
I did this ok so ignore this part! I had just typed it down as this part may yield a clue for the other parts.
2b.) Hence show that
2c.) Suppose the numbers Pr ( r is a subscript!) are defined by
How do I do them! Please help me thank you so much!!!