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

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Your function is:
f(x)=(1)/(2)\cos \Big( (1)/(4x)\Big) -1

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

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

Midline: $y=-1$

User Brayan Aguilar
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