Hi... my english is not the best (I speak spanish), but... I need help with some problems... Can you help me please? ^^... Is urgent!
For the first one recall the binomial theorem :Demonstrate:
As for any two integers and one has and , one can write (thanks to the binomial theorem) and get . It gives us
Using this idea, what is ?
For the last two questions use the definition of :
For example :