SOLUTION: Hello there. I have a silly problem really. i have a function : f(x)=-2cos(2x+pi/2). I need to draw a graph of it. I've found the spots(zero,minimal,maximal) and I am not sure of w

Algebra ->  Trigonometry-basics -> SOLUTION: Hello there. I have a silly problem really. i have a function : f(x)=-2cos(2x+pi/2). I need to draw a graph of it. I've found the spots(zero,minimal,maximal) and I am not sure of w      Log On


   

Question 312079: Hello there. I have a silly problem really. i have a function : f(x)=-2cos(2x+pi/2). I need to draw a graph of it. I've found the spots(zero,minimal,maximal) and I am not sure of whether I'm supposed to draw it from coords -pi/4,-2 or -pi/4,2. please help me.
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Typically repeating functions are drawn over at least one period.
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One period of this function would be pi.
What is your question?
+graph%28+300%2C+300%2C+-2%2C+2%2C+-3%2C+3%2C+-2%2Acos%282%2Ax%2Bpi%2F2%29%29+