Page 68 - modul trigonometri bilingual

Change in coefficient on function graph y = a sin b(x-c) + d

against function graph y = sin x
a. Change in coefficient a on the function graph y = a sin x
Pay attention to the function graph y1 = without x, y2 = 2
without x, and3 = 3 sin x below.

← y1 = sin x

← y2 = 2 sin x

← y3 = 3 sin x

It was found that:

1. The value a of the function y = a sin x affects the
maximum and minimum values of the function.
2. The function graph y = a sin x can be obtained by
multiplying all the ordinates of the graph function y =

sin x by a, and then drawing new dots with smooth
curves.

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