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08-08-2020
Mathematics

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What are the domain, range, and midline of the function f(x)=1/2cos(1/4x)-1?

Respuesta :

08-08-2020

Your function is: [tex]f(x)=\frac{1}{2}\cos \Big( \frac{1}{4x}\Big) -1[/tex]

Domain: $(-\infty, +\infty)-\{ 0 \}$ or $R-\{ 0 \}$

Range: $[-\frac{3}{2}, -\frac{1}{2}]$

Midline: $y=-1$

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