Graph y=2cot(x)
Problem
Solution
Identify the parent function and its properties. The parent function is
y=cot(x) which has vertical asymptotes wheresin(x)=0 specifically atx=n*π for any integern Determine the period of the function. The period of
cot(x) isπ Since there is no horizontal stretch or compression (the coefficient ofx is1 , the period remainsπ Identify the vertical stretch. The coefficient
2 in front of the cotangent function indicates a vertical stretch by a factor of2 This means the function will increase and decrease more steeply than the standard cotangent graph.Locate key points within one period
(0,π) Thex intercept occurs at the midpoint of the asymptotes, which isx=π/2 Atx=π/4 y=2*cot(π/4)=2*(1)=2 Atx=(3*π)/4 y=2*cot((3*π)/4)=2*(−1)=−2 Sketch the asymptotes and the curve. Draw vertical dashed lines at
x=0 x=π andx=2*π Plot the points(π/4,2) (π/2,0) and((3*π)/4,−2) then draw the characteristic decreasing cotangent curve through them.
Final Answer
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