MAT135Y5 Lecture 1: MAT135Y Lecture 1.5 - Appendix A and Appendix B
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Mat135y lecture 1. 5 - appendix a and appendix b. ): whole numbers 1, 2, 3, 4 +"ve. Integers ( z ): whole numbers -2, -1, 0, 1, 2 +"ve / - ve. Rational numbers ( r ): r = , q. Irrational numbers : cannot be written as a quotient. } *condition to have on x, | = such that. Closed intervals : a < b, including endpoint a and b. Open intervals : not including endpoint a and b. Set notation: i = { x | a x. Inequality notation: a < x < b. Set notation: i = { x | a < x < b } Try at home questions: write the number line in interval notation, draw the number line that represents the following inequality: x < 10. Solve -1 + x < 3x - 10 *treat inequalities as an equality (=) 1 + 10 < 3x - x.
