Q3 c yee 18 symmetrical about the ytaxis . 2 e 29 / AL + Au 2 ~ 2.49 Use tech , 520 2 2. 5066 3 d. [3 20 ofze area 2 3 t c3b. 3 e 2250 920 1 6- 38 1 = 2250 2250 D h= b-a = 3-0 n 22 50 750 [like 9 721 2506 2 ) xi=athi = Ot ! 750 750 fuel = 67 f ( i) = + 750 e AL= \\ hx foci) AL - 2249 2249 750 * h xf ( xci ) 750 ) xe 2 2 1. 25059 X=0F +3:46 43218/ @ 82% 4. - 1.2506 e Since 9= 7 is symmetrical about the y-axis, the lower and upper rectangle sums for -1 8 x