Saved Bookmarks
| 1. |
यदि ` x^(y) =e^(x-y)` तब सिद्ध कीजिए की `(dy)/(dx) = (log x )/((1+log x )^(2))` |
|
Answer» ` " "x^(y) =e^(x-y)` दोनों पक्षों का लघुगणक लेने पर, ` " "ylog x =(x-y) log_e e= x -y` ` rArr " "y(1+log x )=x ` ` rArr " "y= (x)/((1+log x ))` ` therefore (dy)/(dx) ((1+log x )(d)/(dx) x-x (d)/(dx) (1+ log x ))/((1+ log x )^(2))=(1+log x-1)/((1+log x )^(2))` ` rArr" "(dy)/(dx) =(log x )/((1+ log x )^2)` |
|