Dilations and Reflections of functions | Year 11 Methods | MaffsGuru.com
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This video is the second in the series for Year 11 Mathematical Methods looking at Transformations of functions. Building on the previous video I now look at how we might look at reflecting and dilating functions. I look at a number of examples and approaches including substitution algebra and direct substitution. I explain every example in an easy to understand way but deep enough to help you smash any test or exam.
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00:10 Welcome
00:15 Learning objectives
01:02 Recap of past learning
02:15 Dilating from the x-axis
05:52 Dilating from the x-axis using substitution algebra
07:54 Dilating from the x-axis using direct substitution
08:59 Dilating from the y-axis
10:01 Dilating from the y-axis using substitution algebra
11:39 Dilating from the y-axis using direct substitution
13:02 Reflecting in the x-axis
14:42 Reflecting in the x-axis using substitution algebra
15:52 Reflecting in the x-axis using direct substitution
16:21 Reflecting in the y-axis
16:53 Reflecting in the y-axis using substitution algebra
17:40 Reflecting in the y-axis using direct substitution
18:48 Example 1
21:18 Applying the theory to sketching graphs
25:18 Summary from the Cambridge Textbook
25:47 Learning objectives revisited
26:00 Final words
This maths video has been created for courses which are delivered in Australia but, as Maths is a constant, it is equally helpful for students in the USA, UK and other countries who are looking for good maths videos for both high school and middle school.
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