[tex] y=2\cos (\frac {-1} {2}x + 90 ) -3 [/tex](adsbygoogle = window.adsbygoogle || []).push({});

I changed the original function to

[tex] y=2\cos [\frac {-1} {2} (x-180)] -3 [/tex]

period=-4pi

amplitude=2

max=-1

min=-5

range={y:-5<=y<=-1}

domain={x:XER}

vertical displacement 3 units down

horizontal translation 180 units left

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# Check another trig behaviour

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