ANSWERS 



(17) Magnitude - V^ 3 + 4-(}-/- I- XabfiW 

 direction - 6 + tan~ l 2/ / -t 



(18) 51 3', 8-02 (19) 4076 Ib. 



(20) Going N., 35 m.p.h. due N. ; going E., 52 2 m.p.h. 10 42' S. 



of E. ; going S., 05 m.p.h. due S. ; going \V., 52-2 m.p.h. 

 10 12' S. ..f W. 



(21) Going N., 65-69 m.p.h. 12 26' E. of N. ; going E., 65-69 



m.p.h. 12 26' N. of E. ; going S., 88-56 m.p.h. 21 31' E. 

 of S. ; going W., 38-56 m.p.h. 21 81' N. of \\ . 



XXV (pages 459, 460, 461, 462) 



(2) * = 110-7m 1 21 , n' 21 = 0-009036 



(3) y - 552-7 x 36-52-" (4) F = 254-5r - 17 

 (5) M = 6-08 VM- + T 2 - 26190 (6) a = - 0-0646 

 (7) y = 0-044&T + 3-275 Iog 10 x ()/= 10-14' 2717!C 

 (9) y = 9-08^ 2 + 1-206 x 10* 



(10) y = 7-591 + l-SeDa? 1 - 518 , 23-34 



(11) y = 0-5 + 4-454e- 3465as , 18-31 



(12) y = 2-452 x 1-523* - 0-387, 8-275 



(13) y= 2-76(a;+ 5-72) 1 ' 24 , 34-79 



(14) y = 0-404# + l-225a? log jo x 



(15) y = 0-986#' 202a! (16) y = 10-12 + l-76e' 215x 

 (17) y = 0-762(cC + 2-26) 1 ' 74 (18) y = 15-62 + 0-746* 1 ' 875 



