12 Mathematics Applications of Derivatives - Set No : 19 Question No :7
Question No : 7
| The denominator of a fraction is greatest then 16 of the square of numerator, then least value of fraction is |
| a) |  | b) |  |
| c) |  | d) |  |
Answer No : 7
(b)Let
the number be  , then  On
differentiating w.r.t. , we get 
(i)Put
 for maxima or minima Again,
on differentiating w.r.t. , we get At   is maximum at  And at  is minimum Least value of 
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