DifferentiationHard
Question
If y = ln 
, then x3 
is equals to
, then x3 is equals to Options
A.
B.
C.
D.None of these
Solution
y = x(lnx - ln (a + bx)) ... (1)
⇒
= lnx - ln (a + bx) + 
... (2)
⇒
⇒ x3
... (3)
By (1) and (2),
x
- y = 
⇒ x3
⇒
= lnx - ln (a + bx) + ... (2)⇒
⇒ x3
... (3)By (1) and (2),
x
- y = ⇒ x3
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