Welcome to another post of Understanding Math. We heard you having issues in questions related to functions. To assist you in understanding concepts, we’re attaching the best possible video guidelines below to assist you on the way.
Try to grab the concepts by repeating videos and don’t forget to take notes.
So, What are functions? Starting from most basics of functions (Must watch If you’re new to functions)
Part 1-
Part 2-
Part 3-
Credits to Sal Khan from KhanAcademy.
Basic Graphs you need to know
Transformations of graph
Horizontal and vertical shifts:
Reflections about axes:
Transformation example:
Function- Even or odd?
Domain and Range of functions
Domain:
Range:
Domain and range (A basic approach) :
Credits to Sal Khan from KhanAcademy
An easy way to find domain:
The domain of a function using GRAPH:
The domain of a function using NO GRAPH:
The Range of a function using GRAPH:
Domain and Range of a piecewise function *Must watch, when you’re done with above concepts*
Credits PatrickJMT
*MUST WATCH*
Domain and range of functions related to fractions/Radicals/others in interval notation:
The domain of a composition of Function, little hard but it appears in test sometimes
Credits PartrickJMT
What’s an inverse of a function?
Basics:
WOAH! That was too much.
Well, I hope you took notes of all.
Now, time to practice and brush up on concepts.
Go dive into our where to practice post and apply it everywhere. From Math workbook to Khan Academy SAT mission to SAT practice papers. All yours.
Because It’s a function… more you practice, more can solve questions in the test. Isn’t? 😀
Kapish, Until then.
First Gen 