MAT135Y5 Chapter Notes - Chapter Appendix A and Appendix B: Cengage Learning, Triangle Inequality
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MAT135Y5 Full Course Notes
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Mat135y lecture 1 - appendix a and appendix b. Rational numbers , ratios of integers r = m n. Recall, division by 0 is always ruled out, so. , m and n are integers, n 0. 0 are undefined can"t be expressed as a ratio of integers, therefore called. If the number is irrational, the decimal is non repeating. O , called the origin, which corresponds to the real number 0. We say a is less than b and write a < b if b - a is a positive number. The symbol a a) means that either a < b or a = b and is read a is less than or equal to b . A set (s) is a collective of objects, and these objects are called the elements of a set. The notation a s means that a is an element of s. The closed interval : [a, b] = { x l a x.