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1 y=a*ctg(bx+c) a=none periodicity of cot is pi period=periodicity/|b|..........in your case b=2/3 period=pi/|2/3|=3pi/2 2. amplitude=none periodicity of csc is 2pi period=periodicity/|b|..........in your case b=2 period=2pi/|2|=pi

Very good study notes. However, we will stick to college algebra. One course at a time. After college algebra, back to Calculus 1.