DifferentiationHard

Question

If xy . yx = 1, then equals to

Options

A.
B.
C.
D.

Solution

xy . yx = 1  ⇒  y lnx + x lny = 0
Diff. w.r.t. x, we get
. lnx + + lny +

Create a free account to view solution

View Solution Free
Topic: Differentiation·Practice all Differentiation questions

More Differentiation Questions

If ax2 + 2 hxy + by2 = 0, then is equal to...Let f(a) = g(a) = k and their nth derivatives fn (a), gn (a) exist and are not equal for some n. Further if = 4. then th...If sin y = x cos (a + y), then dy/dx equals-...If y = sin-1 + sec-1 then equals -...If y sin x = x + y, then equals-...