v dw
dx
in two ways - first by repeated application of product rule, second by logarithmic
differentiation 5 6  Derivatives of Functions in Parametric Forms
Sometimes the relation between two variables is neither explicit nor implicit, but some
link of a third variable with each of the two variables, separately, establishes a relation
between the first two variables In such a situation, we say that the relation between
Rationalised 2023-24
CONTINUITY AND DIFFERENTIABILITY
135
them is expressed via a third variable