Question: Help to expand rational function

December 02 2013 stevens1111 10

2

I am trying to expand  a rational function that is in the form:

P(z) = (1 + z1)2 (1 + z)2· (r1z + r0 + r1z1)

to the form:

 

P(z) = r1z3 + (4r1 + r0)z2 + (7r1 + 4r0)z + (8r1 + 6r0)

 

+(7r1 + 4r0)z1 + (4r1 + r0)z2 + r1z3

Can someone show me how to do this please?

 

 

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