−3
參考文獻

1 2  Kilhamn, Cecilia.  (Ph.D.论文). University of Gothenburg. 2011. doi:10.13140/RG.2.1.1575.0649.
↑  Glaeser Georges. . Recherches  en  Didáctique des mathématique: pp.303–346.  引文格式1维护：冗余文本 (link)
↑  . eduplace.com.   [2020-03-20]. （原始内容存档于2012-04-04）.
1 2  . Learn系列. 時報. 2015: 203. ISBN 9789571363189.
↑  Martinez, A.A. . Princeton University Press. 2006: 14. ISBN 9780691123097. LCCN 2005043377.
1 2   (PDF),   [2017-08-08], （原始内容存档 (PDF)于2017-08-28）
1 2  . uk.mathworks.com.   [2017-08-05]. （原始内容存档于2021-03-01）.
↑  Collin Wells.  (PDF). TI training Labs.   [2020-04-16]. （原始内容存档 (PDF)于2016-02-24）.
↑  Schlessinger, Monroe.  2nd ed., rev. and expanded. New York: M. Dekker. 1995  [2020-03-20]. ISBN 0824792599. （原始内容存档于2017-08-05）.
1 2  International Bureau of Weights and Measures,  (PDF) 8th, 2006, ISBN 92-822-2213-6 （英语）
↑  Anglin, K.L. . John Wiley & Sons. 2007: 122. ISBN 9780470197264.
↑  Cox, J.F. . Delmar Thomson Learning. 2002: 440. ISBN 9780766830189. LCCN 2001028356.
↑  Weisstein, Eric W. (编). . at MathWorld--A Wolfram Web Resource. Wolfram Research, Inc.  [2020-03-18] （英语）.
↑  Sloane, N.J.A. (编). . The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
↑  Sloane, N.J.A. (编). . The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
1 2 3  Hardy, Godfrey Harold; Wright, E. M.,  Fifth, The Clarendon Press Oxford University Press: 213, 1979 [1938], ISBN 978-0-19-853171-5, MR 0568909
1 2  Riesel, H. . Progress in Mathematics. Birkhäuser Boston, Springer Science & Business Media. 2012. ISBN 9781461202516. LCCN 94027688.
↑  Conway, John Horton; Guy, Richard K. . Springer. 1996: 224. ISBN 0-387-97993-X.
↑  Stark, H. M.,  (PDF), Journal of Number Theory, 1969, 1: 16–27  [2020-03-20], doi:10.1016/0022-314X(69)90023-7, （原始内容存档 (PDF)于2012-02-11）
↑  Weisstein, Eric W. (编). . at MathWorld--A Wolfram Web Resource. Wolfram Research, Inc.  [2020-03-14] （英语）.
↑  Sloane, N.J.A. (编). . The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
↑  Kyle Bradford and Eugen J. Ionascu, , arXiv, 2014  [2020-03-20], （原始内容存档于2020-03-26）
↑  LeVeque, William J. . New York: Dover Publications. 2002: II:57,81 [1956]. ISBN 978-0-486-42539-9. Zbl 1009.11001.
↑  Kelly Emmrich and Clark Lyons.  (PDF). 2017 West Coast Number Theory Conference. 2017-12-18  [2020-03-20]. （原始内容存档 (PDF)于2020-03-26）.
↑  Sloane, N.J.A. (编). . The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
↑  Sloane, N.J.A. (编). . The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
↑  Babbage, K.J. . ScarecrowEducation. 2004: 43. ISBN 9781578861408. LCCN 2004001279.
↑  GMAT, M. . Manhattan Prep GMAT Strategy Guides. Manhattan Prep Publishing. 2011: 73. ISBN 9780979017599.
↑  . calculatorsoup.com.   [2020-04-25]. （原始内容存档于2017-05-24）. For example, the square roots of 9 are -3 and +3, since (-3)2 = (+3)2 = 9.
↑  . mathsisfun.com.   [2020-04-25]. （原始内容存档于2020-08-12）. square root of 9 could be −3 or +3
↑  Sloane, N.J.A. (编). . The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
↑  Sloane, N.J.A. (编). . The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
↑  . sciencing.com. 2018-03-18  [2020-03-20]. （原始内容存档于2017-07-01）.
↑  José Luis Gómez Pardo. . SpringerLink : Bücher. Springer Berlin Heidelberg. 2012: 336. ISBN 9783642321665. LCCN 2012944964.
↑  Bard, G.V. . American Mathematical Society. 2015: 269. ISBN 9781470411114. LCCN 14033572.
↑  Nathanson, M. B. . Graduate Texts in Mathematics 195. Springer-Verlag. 2000  [2022-08-24]. ISBN 0-387-98912-9. MR 1732941. Zbl 0953.11002. （原始内容存档于2020-09-23）.
↑  . AVCalc.   [2019-05-18]. （原始内容存档于2019-05-18） （英语）.
↑  . eFunda.   [2019-05-18]. （原始内容存档于2019-05-18） （英语）.
1 2  Wedeniwski, Sebastian, Simon Plouffe , 编, , Project Gutenberg, 2001  [2020-03-20], （原始内容存档于2021-10-23）
↑  James W. Brennan. . jamesbrennan.org.   [2020-04-16]. （原始内容存档于2020-02-19）.
↑  . 天下雜誌. 2019年11月17日.
↑  Dummies, C. . Wiley. 2015: 25. ISBN 9780730326809.
↑  Alshwaikh, Jehad and Adler, Jill. . 2017-04: 10. ISBN 978-0-9922269-4-7.
↑  E.g. , , Volume 1: Basic Architecture, 2006-11
↑  Ryan Chadwick. . ryanstutorials.net.   [2020-04-16]. （原始内容存档于2017-08-17）.
↑  . 教師檢定.教師甄試叢書. 志光教育文化. 2005: 1-10,1-11. ISBN 9789861280219.
↑   (PDF). ponderisd.net.
↑  . tlri.gov.tw.   [2020-04-25]. （原始内容存档于2017-08-01）.
↑  魯特. . Bai xiang wen hua shi ye you xian gong si. 2018. ISBN 9789863587163.
↑  . ashiya.ne.jp.   [2020-04-16]. （原始内容存档于2017-08-27）.
↑  The National Aeronautic and Atmospheric Administration's Glenn Research Center. . grc.nasa.gov.   [2013-04-09]. （原始内容存档于2013-04-14）.
↑  Jazar, R.N. . : 21. ISBN 9781071604809.
↑  .   [2020-03-26]. （原始内容存档于2020-03-05）.
↑  Espenak, Fred. . NASA Eclipse Web Site. NASA.   [2009-02-19]. （原始内容存档于2009-02-08）.
↑  Richards, E. G. . Urban, Sean E.; Seidelmann, P. Kenneth  (编).  3. Mill Valley, CA: Univ Science Books. 2013: 591. ISBN 1-891389-85-8.
↑  . tvlife.jp. 2017-12-31  [2020-03-20]. （原始内容存档于2020-09-22）.
1 2  Mallama, A. . Sky & Telescope. 2011, 121 (1): 51–56.
↑  Silverman, S.M. and Mullen, E.G. and Air Force Cambridge Research Laboratories (U.S.). . AFCRL TR. Air Force Cambridge Research Laboratories, Air Force Systems Command, United States Air Force. 1974: 27-29.
↑  . vm.nthu.edu.tw.   [2020-04-25]. （原始内容存档于2019-12-24）.
↑  Mallama, Anthony; Hilton, James L. . Astronomy and Computing. 2018-10, 25: 10–24. Bibcode:2018A&C....25...10M. arXiv:1808.01973 . doi:10.1016/j.ascom.2018.08.002.
↑  . TimeTemperature.com.   [2012-10-26]. （原始内容存档于2012-10-23）.
↑  Wenyi Zhao. Handbook for Chemical Process Research and Development. CRC Press, 2016. 2.1.1.2 Sulfuric Acid. ISBN 9781315350202
↑  Andrew Burrows,  John Holman, Andrew Parsons,  Gwen Pilling, Gareth Price. Chemistry³: Introducing Inorganic, Organic and Physical Chemistry. OUP Oxford, 2013. pp 329. The strengths of oxoacids. ISBN 9780199691852
↑  Haynes, W. M. (2014). CRC Handbook of Chemistry and Physics 95ed. CRC Press. ISBN 97814822-08689.