01:640:151 Final: 01:640:151 - Term Test 1 - Part 1
Document Summary
{pq:q0, p,q are integers} e. g. , e, 2 all rational and irrational numbers. Note: a colon (:) or vertical line (|) both denote (cid:862)su(cid:272)h that(cid:863) set of (cid:396)eal numbers is represented as or (- , (cid:895) Intervals (cid:894)a, (cid:271)(cid:895) = a (cid:1095) (cid:454) < (cid:271) open notation (does not have end points) Inequalities: real numbers have an order (unlike imaginary and complex numbers, therefore, if a and b are real numbers, either ab. Direction does not matter, absolute value is strictly quantitative. D = (cid:4666)(x2 x1)2 + (y2 y1)2) Equation of line in x*y plane (in 2) M = y2 y1/x2 x1 = rise/run = y/ x. Or point slope formula = y y1 = m(x x1) Example: how do you get the equation of a straight line while it goes through a slanted line (point slope) Points are (2, -7), (-3, 4) = -11/5 --> slope of a line (going down)
