Answer to Question #153162 in Classical Mechanics for Afraid

Question #153162
Explain generating function.
1
Expert's answer
2021-01-04T14:35:12-0500

The function which provides the method to solve the recurrence relation that is called Generating function.

Let G(t) is a series G(t)=aot0+a1t1+a2t2+a3t3+......antnG(t)=a_ot^0+a_1t^1+a_2t^2+a_3t^3+......a_nt_n

Here, aoa1,a2,a3....a_o a_1, a_2, a_3.... etc are real number.

So, here G(t) is called generating function of sequence ar.a_r.

For constant sequence 1,1, 1, 1 ... the generating function is

G(t)=11tG(t)=\frac{1}{1-t}

So, we can express it as G(t)=(1t)1=1+t+t2+t3+.......G(t)=(1-t)^{-1}=1+t+t^2+t^3+.......


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