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Transforming Functions Graphs - Horizontal Stretch - Scale Factor 1/a - Examples - Detailed Lesson
Автор: Radford Mathematics
Загружено: 2021-11-13
Просмотров: 5099
Описание:
In this video on transforming functions' graphs, we learn about the horizontal stretch. The horizontal stretch, written y = f(bx), is characterised by the scale factor 1/b (the reciprocal of b) by which we multiply every x-coordinate of the original curve to obtained the transformed one.
With 2 examples we see how to sketch the curves of y=f(2x) as well as y = f(x/3).
We also learn why the scale factor is 1/b.
******* TIME STAMPS / CHAPTERS *******
00:00 Introduction and formula y=f(bx) scale factor 1/b
01:41 Example 1 : y=f(2x)
06:22 Example 2 : y=f(x/3)
10:40 Scale Factor : understanding why it's 1/b
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