The gamma function, just as many of the higher-level functions, has a variety of representations. Among them is another product-type formulation given by Euler. The most direct way to proceed is to give the proposed mathematical structure and then demonstrate that it produces the equation satisfied by the gamma function, i.e., r(z + 1) = zT(z). Consider the function u(z) () Îĩ (1+±)*] u(2) = (8.125) + 386 Difference Equations Therefore [(1++)**1" u(z+1) = z + 1+ z+1 n=1 n (1+ 4)* ("#1) n+1 2十 n+z+1 n 1 (1+±)* П z +1 n=1 n+1 (1+ ±)*] П (1+ %) n=1 = (2) ) (1+ 4) (1+3) n=1 zu(z). (8.126) Also, observe that from equation (8.125), we have 1 (1+±)* (1+ 4) u(1) : П (8.127) = 1. n=1

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
icon
Related questions
icon
Concept explainers
Question

Show me the steps of determine red

8.4.4
Euler's Definition of the Gamma Function
The gamma function, just as many of the higher-level functions, has a variety
of representations. Among them is another product-type formulation given by
Euler. The most direct way to proceed is to give the proposed mathematical
structure and then demonstrate that it produces the equation satisfied by the
gamma function, i.e., I'(z + 1) = zT(z).
Consider the function u(z)
u(2) =
(1+±)
П
(8.125)
n=1
386
Difference Equations
Therefore
(1+ ±)**]
z+1
u(z+1) = () II
n
z +1
1+
z+1
n=1
n
(1+ )
П
n+1
z + 1
n+z+1
n=1
n
-()피
(1+)
П
z +1
1
n+1
n=1
(1+ ±)* |
П
(1+ %)
n=1
(1+
= (2) (=) I
%3D
(1+ %)
n=1
= zu(z).
(8.126)
Also, observe that from equation (8.125), we have
1
(i) II
(1+±)*
(1+ %)
e(1) =
= 1.
(8.127)
n=1
Therefore, u(z) as given by equation (8.125) is the gamma function.
Transcribed Image Text:8.4.4 Euler's Definition of the Gamma Function The gamma function, just as many of the higher-level functions, has a variety of representations. Among them is another product-type formulation given by Euler. The most direct way to proceed is to give the proposed mathematical structure and then demonstrate that it produces the equation satisfied by the gamma function, i.e., I'(z + 1) = zT(z). Consider the function u(z) u(2) = (1+±) П (8.125) n=1 386 Difference Equations Therefore (1+ ±)**] z+1 u(z+1) = () II n z +1 1+ z+1 n=1 n (1+ ) П n+1 z + 1 n+z+1 n=1 n -()피 (1+) П z +1 1 n+1 n=1 (1+ ±)* | П (1+ %) n=1 (1+ = (2) (=) I %3D (1+ %) n=1 = zu(z). (8.126) Also, observe that from equation (8.125), we have 1 (i) II (1+±)* (1+ %) e(1) = = 1. (8.127) n=1 Therefore, u(z) as given by equation (8.125) is the gamma function.
Expert Solution
steps

Step by step

Solved in 2 steps

Blurred answer
Knowledge Booster
Points, Lines and Planes
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, advanced-math and related others by exploring similar questions and additional content below.
Recommended textbooks for you
Advanced Engineering Mathematics
Advanced Engineering Mathematics
Advanced Math
ISBN:
9780470458365
Author:
Erwin Kreyszig
Publisher:
Wiley, John & Sons, Incorporated
Numerical Methods for Engineers
Numerical Methods for Engineers
Advanced Math
ISBN:
9780073397924
Author:
Steven C. Chapra Dr., Raymond P. Canale
Publisher:
McGraw-Hill Education
Introductory Mathematics for Engineering Applicat…
Introductory Mathematics for Engineering Applicat…
Advanced Math
ISBN:
9781118141809
Author:
Nathan Klingbeil
Publisher:
WILEY
Mathematics For Machine Technology
Mathematics For Machine Technology
Advanced Math
ISBN:
9781337798310
Author:
Peterson, John.
Publisher:
Cengage Learning,
Basic Technical Mathematics
Basic Technical Mathematics
Advanced Math
ISBN:
9780134437705
Author:
Washington
Publisher:
PEARSON
Topology
Topology
Advanced Math
ISBN:
9780134689517
Author:
Munkres, James R.
Publisher:
Pearson,