ANSWERS
261
Exercises XIV. (p. 173.)
(1) (i) ;
- (ii) and ;
- (iii) and .
(2) or radians.
(3) .
(4) .
(5) .
(6) .
(7) The slop is , which is a maximum when or ; the value of the slope being then . When the slope is .
(8)
- .
(9) .
(10) ; .
(11) (i) ;
- (ii) ;
- (iii) .
(12) (i) ;
- (ii) ;
- (iii) ;
- (iv) ;
- (v) .
(13) .