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Sagot :
Given
[tex]y=-3cos4x[/tex]Find
Period, range and amplitude of the cosine function
Explanation
For the given case, A = -3 , B = 4 , C = 0, D = 0
the amplitude is the absolute value of A ,
[tex]\lvert{-3}\rvert=3[/tex]The period is
[tex]\frac{2\Pi}{B}=\frac{2\Pi}{4}=\frac{\Pi}{2}[/tex]Range is
[tex]-3\leq x\leq3[/tex]Final Answer
Amplitude is 3
Period is
[tex]\frac{\Pi}{2}[/tex]Range
[tex]-3\leq x\leq3[/tex]
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