Applying Definited Integral with a Parameter to Prove the Wallis Formula
HE Yu-Bo, WANG Ya, LUO Si-Wen, PENG Li
journal6 . 2013, (2): 19 -21 .  DOI: 10.3969/j.issn.1007-2985.2013.02.004

Copyright © 2021 Editorial Department of Journal of Jishou University（Natural Sciences）
Add. :120 South Renmin Road,Jishou,Hunan 416000,P. R. China
Tel. (86)-743-8563684 email:jdxbziran@jsu.edu.cn  https://zkxb.jsu.edu.cn
Technical Support:Beijing Magtech Co., Ltd.
WeChat e-book chaoxing Mobile QQ