4.3 Homework Quiz 1. Set up a definite integral that yields the area of the region. (Do not evaluate the integral.) The function is f ( x) = − x 2 + 2 x + 3 . 2. Sketch the region whose area is given by 4 ∫ ( − x + 4 ) dx . Then calculate the area. 0 3. Given 3 6 6 1 1 3 ∫ f ( x ) dx = 4 and ∫ f ( x ) dx = −5 , evaluate ∫ f ( x ) dx = 4 . 4. Given the graph of y = ln x , to which value 4 is ∫ ln x dx closest? (a) 1 (b) 2 (c) 4 (d) 8 2 254 © 2014 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.