1.11. Question 9 Express each of the following sums in summation notation. (a) x1 y1 x2Y2 + x3Y3 + x4Y4 (b) (x1 − y1) + (x2 − Y2) + (x3 − Y3) This question asks a basic nottaion to represent sums. We will use sums manipulations durig the course. (a) (b)

41. The function A defined by Answer A(x) = 1 + is called an Airy function after the English mathematician and astronomer Sir George Airy (1801-1892). a. Find the domain of the Airy function. Answer x⁹ 2-3+2-3-5-6-2-3-5-6-8-9 b. Graph the first several partial sums on a common screen. c. T Use a computer algebra system that has built-in Airy functions to graph A on the same screen as the partial sums in part (b) and observe how the partial sums approximate A.

(n+2)! Write down the first five terms of the sequence an 8n2 + 6n +7 a1 = %3D d2 = a3 = %3D %3D d4 d = МacВook Pro Q Search or enter website name esc