Provide solution RD Sharma maths class 12 chapter 10 differentiation exercise 10.6 question 7 maths textbook solution
Hint: Let u =, v = and w =
Find, & to get
Given:
Solution:
Here it is given that,
Let us consider u =, v = and w =
So, y = u + v + w & = ++
Now, u =
Taking log on both sides, we get:
…(1)
Again taking log on both sides,
…(2)
Differentiate (2) w.r.t x,
...(A)
Now, v =
Taking log on both sides, we get:
…(3)
Differentiate (3) w.r.t x,
…(B)
Now, w =
Taking log on both sides, we get:
…(4)
Again taking log on both sides,
…(5)
Differentiate (5) w.r.t x,
…(C)
Using A,B and C, becomes:
Hence, it is proved.