MIT OpenCourseWare http://ocw.mit.edu 18.014 Calculus with Theory Fall 2010 For information about citing these materials or our Terms of Use, visit: http://ocw.mit.edu/terms.
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Definition of square root of a number and existence of square roots of negative number, zero and positive number are explained. Theorems on square root are stated and proved. Irrational number is introduced. How to prove a given number is irrational is explained by proving that square root of 2 is irrational.
Prof. James Raymond Munkres, Maths, 18.014 Calculus with Theory, Fall 2010: 1. Square roots, and the existence of irrational numbers, Massachusetts Institute of Technology: MIT OpenCourseWare),http://ocw.mit.edu (Accessed August 2,2011). License: Creative Commons BY-NC-SA:http://ocw.mit.edu/terms/#cc
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