question_answer 90)

      Using differentials, find the approximate value of each of the following :       (a)                                       (b)  

Answer:

(a)         Taking                                                ?.. (1)                             ?.. (2)       (2) ? (1)        ?.. (3)       Using approximation       (3)                                           Hence       (b)       Let x = 32,       Take y = (x)?1/5                                 ?.. (1)                              .?. (2)       (2) ? (1)                                       ?? (3)       Using approximation       (3)                                                                                      Hence