c722c7b68bed016

http://nhiro.org.s3.amazonaws.com/d/b/dba2998fd259a4dbcea60df71237dc64.jpg https://gyazo.com/dba2998fd259a4dbcea60df71237dc64

(OCR text)

For the special purpose we have in view, let us evaluate tne

numerator of P by integrating by parts; we find

e-x-1dx|x"- +(n-2)x"+(n-2)(n-4)x

X

... + (n-2)(n-4)(n-6)... (n-2r-2)x-e-

(n-2)(n-4)(n-6)... (n-2r) h-

'X

(n-2)(n-4) (n- 6).. . (n-2r) dx

-bx-2-1dx

X

X"-2r+2

(n-2r)(n-2r+ 2)

X"-2r

n-2r

X-2+4

(n-2r)+(n-2r+2) (n-2r+ 4)

,n-2

(n-2r) (n-2r+2)... (n-2)

Pearson (1900)

13118 A

17