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Algebra

Composite functions- Home
- Sixth Year Maths
- Derivatives

Still Confused?

Try reviewing these fundamentals first.

Algebra

Composite functionsStill Confused?

Try reviewing these fundamentals first.

Algebra

Composite functionsNope, I got it.

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Get Started Now- Lesson: 131:49
- Lesson: 2a9:40
- Lesson: 2b10:21
- Lesson: 3a11:16
- Lesson: 3b1:10
- Lesson: 3c2:19

We have studied the notion of average rate of change thus far, for example, change in position over time (velocity), average change in velocity over time (acceleration) etc. However, what if we are interested in finding the instantaneous rate of change of something? To answer this, we will first learn about the concept of the definition of derivative in this section, as well as how to apply it.

Basic concepts: Composite functions,

Definition of Derivative

$f'\left( x \right) = \;_{h \to 0}^{\;lim}\frac{{f\left( {x + h} \right) - f\left( x \right)}}{h}$

$f'\left( x \right) = \;_{h \to 0}^{\;lim}\frac{{f\left( {x + h} \right) - f\left( x \right)}}{h}$

- 1.Find the derivative of the given function using the definition of derivative.

$f\left( x \right) = {x^3} - 5x + 6$ - 2.
**Definition of derivative with irregular functions**

Find the derivative of the following functions using the definition of derivative.

a)$f(x)=\sqrt{x-2}$b)$f(x)=\frac{3-x}{2+x}$ - 3.
**Applications to definition of derivative**

Let $f(x)=4x^{\frac{1}{3}}$a)For when $x \neq 0$, find the derivative of $f(x)$.b)Show that $f'(0)$ does not exist.c)For what value(s) of $x$ does the vertical tangent line occur?

25.

Derivatives

25.1

Definition of derivative

25.2

Power rule

25.3

Gradient and equation of tangent line

25.4

Chain rule

25.5

Derivative of trigonometric functions

25.6

Derivative of exponential functions

25.7

Product rule

25.8

Quotient rule

25.9

Implicit differentiation

25.10

Derivative of inverse trigonometric functions

25.11

Derivative of logarithmic functions

25.12

Higher order derivatives

We have over 860 practice questions in Sixth Year Maths for you to master.

Get Started Now25.1

Definition of derivative

25.2

Power rule

25.3

Gradient and equation of tangent line

25.4

Chain rule

25.5

Derivative of trigonometric functions

25.6

Derivative of exponential functions

25.7

Product rule

25.8

Quotient rule

25.9

Implicit differentiation

25.10

Derivative of inverse trigonometric functions

25.11

Derivative of logarithmic functions

25.12

Higher order derivatives