i have a problem graphing trig functions such as f(x) = 2cos(3x+pi/2) -1(adsbygoogle = window.adsbygoogle || []).push({});

i know this should be very simple but i am missing something

can someone explain the way youd go about graphing this

amp= 2

period = 2pi/3

y trans = -1

x trans = (pi/2)/3 [right?]

so when i try graph it my answer is wrong, what am i missing? is it something to do with the smaller period, need help , please!

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# Graphing trig functions

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