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Domain and Range of Functions: Mastering Key Concepts

Grade 11 Math: Master Advanced Concepts & Skills

11FA.A1.1

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Characteristics of quadratic functions

Applications of quadratic functions

11FA.A1.2

Quadratic function in general form: y = ax^2 + bx + c

Quadratic function in vertex form: y = a(x-p)^2 + q

Multiplying polynomial by polynomial

11FA.A1.3

Factor by taking out the greatest common factor

Factor by taking out GCF

Factor by grouping

Factoring difference of squares: \(x^2 - y^2\)

Factoring difference of squares: <katex>x^2 - y^2</katex>

Factoring difference of squares: x^2 - y^2

Factoring trinomials

Factoring Trinomials

11FA.A1.4

Solving quadratic equations by factoring

11FA.A1.5

Graphing quadratic functions: General form VS. Vertex form

Finding the quadratic functions for given parabolas

11FA.A1.6

Using quadratic formula to solve quadratic equations

Solving a quadratic equation with TWO REAL SOLUTIONS

Solving a quadratic equation with TWO COMPLEX SOLUTIONS

11FA.A1.7

Nature of roots of quadratic equations: The discriminant

11FA.A1.8

Solving quadratic equations by completing the square

Applications of quadratic equations

11FA.A2.1

Identifying functions

Function notation

11FA.A2.2

Function notation (advanced)

11FA.A2.3

Domain and range of a function

11FA.A2.4

Introduction to quadratic functions

11FA.A2.5

Transformations of quadratic functions

11FA.A2.6

Combining transformations of functions

11FA.A2.7

Converting from general to vertex form by completing the square

11FA.A2.8

Completing the square

Completing the Square

11FA.A2.9

Shortcut: Vertex formula

Converting general form into vertex form by applying the vertex formula

Vertex Formula Application

11FA.B1.1

Exponents: Rational exponents

Convert between radicals and rational exponents

11FA.B1.2

Exponents: Power rule: (a^x)^y = a^(xy)

Exponents: Power rule

Combining the exponent rules

11FA.B1.3

Graphing exponential functions

11FA.B1.4

Graphing transformations of exponential functions

11FA.B1.5

Finding an exponential function given its graph

11FA.B2.1

Exponential growth and decay by a factor

11FA.B2.2

Evaluating logarithms using change-of-base formula

Solving exponential equations using exponent rules

11FA.B3.1

Exponential growth and decay by percentage

11FA.B3.2

Exponential decay: Half-life

11FA.B3.3

Finance: Compound interest

Finance: Compound Interest

11FA.C1.1

Use sine ratio to calculate angles and sides (Sin = o / h)

Use cosine ratio to calculate angles and sides (Cos = a / h)

Use tangent ratio to calculate angles and sides (Tan = o / a)

11FA.C1.2

Combination of SohCahToa questions

11FA.C1.3

Law of sines

Ambiguous case: SSA triangles

Law of cosines

11FA.C1.4

Applications of the sine law and cosine law

11FA.C1.5

Introduction to bearings

Bearings and direction word problems

Bearings and Direction Word Problems

Angle of elevation and depression

11FA.C2.1

Sine graph: y = sin x

11FA.C2.2

Cosine graph: y = cos x

11FA.C2.3

Tangent graph: y = tan x

11FA.C2.4

Cotangent graph: y = cot x

11FA.C2.5

Secant graph: y = sec x

11FA.C2.6

Cosecant graph: y = csc x

11FA.C2.7

Graphing transformations of trigonometric functions

11FA.C3.1

Determining trigonometric functions given their graphs

11FA.C3.2

Ferris wheel trig problems

11FA.C3.3

Tides and water depth trig problems

Spring (simple harmonic motion) trig problems

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Grade 11 Functions and Applications, University/College Preparation (MCF3M)

A. Quadratic Functions

B. Exponential Functions

C. Trigonometric Functions

math

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Intro

Ex 1: 

a.) 

b.) 

c.) 

<p>- Hi, welcome to this question right here. So we're trying to figure out the domain, the range, again, to see whether the function or not. So the domain for this one's a little tricky, because it seems to start specifically at this point right here. So if I'm gonna do a domain down here, I am going to say that it's starting from a negative three and towards the right infinitely. So how do I do that in terms of domain? Well, there's a couple different ways. I can write down my X is greater than or equal to, because that's a closed dot, okay? And there's a difference between a closed dot and an open dot. So in this case, the X is greater than or equal to the negative three, okay? You can also do it this way: You can also draw something like a square bracket, and you can put down a negative three. It means you start at a negative three, okay? You start on the left hand side, negative three, and it's a square bracket because it represents it also includes the negative three, and the little comma right here, but the problem is the graph extends toward the right infinitely, right? So you just have to do that little infinitely sign, okay? And you do an open bracket, okay? A curved bracket, sorry. So this kind of means that it goes on and on and on forever. It doesn't stop, okay? So there's two ways to write your domain in this case. There's, I believe this is called the interval, and the other one's called a set. And what about the range?<br />
The range is the same thing, but this, I'm gonna look at the y-axes, right? So if you look at the y direction, it seems like you started at the negative two, and then it goes up infinitely, because there's the arrowhead. So I could do: My Y's gonna be greater and equal to a negative two, or I can also do what I just did here for the--<br />
the set notation. It's gonna be starting on the negative two. Again, a square bracket, because it includes the negative two, and again it goes on infinitely, so I'm gonna do a little curved bracket right here meaning it doesn't stop. It goes on infinitely to the top. And lastly you're supposed to determine whether it's a function or not. So, again, vertical line test. So I'm gonna call it the "vertical line test. " The vertical line test. A VLT, okay? What does that mean? It means you take your pen or pencil, straight, hold it vertically, straight up, and then you just have to move it across. Once it starts touching your function, which is your graph, as long as it touches once as it moves across, then it is still a function, okay?<br />
So in this case, it passed my vertical line test, so therefore it is a function. Okay? Does that make sense?<br />
Thanks for watching.</p>


d.) 

e.) 

f.) 

g.) 

h.) 

i.) 

The domain of a function is all the possible values of x's of ordered pairs; whereas the range of a function is all the possible values of y's of ordered pairs. You can easily find them by graphing the functions or ordered pairs. Let's see how in this lesson.

What is the domain and range of a function?

Draw on coordinate planes

Horizontal and vertical distances

Relationship between two variables