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Get Started Now- Intro Lesson9:12
- Lesson: 131:30
- Lesson: 226:14

So far, we have always tried to configure a relation to an explicit function in the form of y = f(x) before finding the derivative of the relation, but what if this is impossible to do so? In this section, we will first learn to identify the difference between explicit functions and implicit functions. Then we will learn how to differentiate a relation with a mix of variables x and y using the method called Implicit Differentiation.

- IntroductionExplicit Functions VS. Implicit Functions
- 1.The graph shows a circle centred at the origin with a radius of 5.

a) Define the circle implicitly by a relation between x and y .

b) Define the circle by expressing y explicitly in terms of x .

c) Use the method of “explicit differentiation” to find the slope of the tangent line to the circle at the point (4, -3).

d) Use the method of “implicit differentiation” to find the slope of the tangent line to the circle at the point (4, -3). - 2.$3{y^4} + 5{x^2}{y^3} - {x^6} = 2x - 9y + 1$

Use implicit differentiation to find: $\frac{{{d}y}}{{{d}x}}$

2.

Differentiation

2.1

Definition of derivative

2.2

Estimating derivatives from a table

2.3

Power rule

2.4

Slope and equation of tangent line

2.5

Chain rule

2.6

Derivative of trigonometric functions

2.7

Derivative of exponential functions

2.8

Product rule

2.9

Quotient rule

2.10

Implicit differentiation

2.11

Derivative of inverse trigonometric functions

2.12

Derivative of logarithmic functions

2.13

Higher order derivatives

We have over 170 practice questions in Differential Calculus for you to master.

Get Started Now2.1

Definition of derivative

2.3

Power rule

2.4

Slope and equation of tangent line

2.5

Chain rule

2.6

Derivative of trigonometric functions

2.7

Derivative of exponential functions

2.8

Product rule

2.9

Quotient rule

2.10

Implicit differentiation

2.11

Derivative of inverse trigonometric functions

2.12

Derivative of logarithmic functions

2.13

Higher order derivatives