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Implicit Differentiation. Implicitly vs. Explicitly Defined Functions y is given explicitly as a function of x (y is solved in terms of x) y is given.

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Presentation on theme: "Implicit Differentiation. Implicitly vs. Explicitly Defined Functions y is given explicitly as a function of x (y is solved in terms of x) y is given."— Presentation transcript:

1 Implicit Differentiation

2 Implicitly vs. Explicitly Defined Functions y is given explicitly as a function of x (y is solved in terms of x) y is given implicitly as a function of x (y is NOT solved in terms of x)

3 Some Graphs of Implicitly Defined Expressions

4 Graph of x-2xy=2

5 Graph of x 2 +y 2 =1

6 Graph of cos(x 2 )-sin(y 2 )=0

7 Implicit Differentiation When y is not given explicitly as a function of x, think of y as “locally” being a function of x. This approach is used to differentiate expressions where a term in the expression is considered implicitly as a function of another variable.

8 Graph of x-2xy=2 Find the equation of the tangent line at the point (2,0)

9 Graph of x 2 +y 2 =1 Find the equation of the tangent line at the point (√0.5, √0.5)


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