What is the period of the function $y= -2 cos(4x-pi) -5$ ?

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What is the period of the function $y= -2 cos(4x-pi) -5$ ?

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Answer 1 · 2018-03-12T18:20:52

$pi/2$

Explanation:

In a sinusoidal equation

$y = a cos(bx+c) + d$ ,

the amplitude of the function will equal $|a|$ , the period will equal $(2pi)/b$ , the phase shift will equal $-c/b$ , and the vertical shift will equal $d$ .

So when $b = 4$ , the period will be $pi/2$ because $(2pi )/4 = pi/2$ .

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What is the period of the function $y= -2 cos(4x-pi) -5$ ?

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What is the period of the function y= -2 cos(4x-pi) -5y= -2 cos(4x-pi) -5?

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Explanation:

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What is the period of the function $y= -2 cos(4x-pi) -5$ ?