Difference between revisions of "Implicit differentiation"

Latest revision as of 00:04, 26 March 2018

Implicit differentiation is differentiating both sides of an implicit equation with respect to one of the variables. The dependent variable is treated as a function of the independent variable and is differentiated with the chain rule.

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$x^3 + xy^2 + x^2y + y^3 + sin(xy) = 2xy$

$3x^2 + (1y^2 + 2xy \frac{dy}{dx}) + (2xy + x^2 \frac{dy}{dx}) + 3y^2 \frac{dy}{dx} + (cos(xy) (1y + 1x \frac{dy}{dx}) = 2 (1y + 1x \frac{dy}{dx})$

$\frac{dy}{dx} (2xy + x^2 + 3y^2 + xcos(xy) - 2x) = -3x^2 - y^2 - 2xy - ycos(xy) + 2y$

$\frac{dy}{dx} = -\frac{3x^2 + 2xy + y^2 + ycos(xy) - 2y}{x^2 + 2xy + 3y^2 + xcos(xy) - 2x}$

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-'''Implicit differentiation''' is [[differentiation|differentiating]] both sides of an implicit [[equation]] with respect to one of the [[variables]]. The [[dependent variable]] is treated as a [[function]] of the [[independent variable]] and is differentiated with the [[chain rule]].
+'''Implicit differentiation''' is [[derivative|differentiating]] both sides of an implicit [[equation]] with respect to one of the [[variable]]s. The [[dependent variable]] is treated as a [[function]] of the [[independent variable]] and is differentiated with the [[chain rule]].
 == Formal Definition ==
-{{incomplete}}
+{{stub}}
 == Example ==