Question

A trigonometric graph has the equation y=2cos2∅. State the amplitude of this graph?​

Answer 1

Answer:

amplitude = 2

Step-by-step explanation:

Given

y = a cosbx

amplitude = | a | , period = $\frac{2\pi }{b}$

y = 2cos2∅

with amplitude = | 2 | = 2

Answer 2

Answer:

$\displaystyle 2$

Step-by-step explanation:

$\displaystyle y = Acos(Bx - C) + D \\ \\ Vertical\:Shift \hookrightarrow D \\ Horisontal\:[Phase]\:Shift \hookrightarrow \frac{C}{B} \\ Wavelength\:[Period] \hookrightarrow \frac{2}{B}\pi \\ Amplitude \hookrightarrow |A|$

With the above information, you should now tell what the amplitude value is.

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