Graph y=1/2*sec(x)
Problem
Solution
Identify the parent function and its properties. The function is a transformation of
y=sec(x) which is the reciprocal ofy=cos(x) Determine the vertical stretch. The coefficient
1/2 indicates a vertical compression by a factor of2 The local minima of the secant curves will be aty=1/2 and the local maxima will be aty=−1/2 Find the period. Since there is no horizontal stretch or compression (the coefficient of
x is1 , the period remains2*π Locate the vertical asymptotes. The function
y=sec(x) is undefined wherecos(x)=0 These vertical asymptotes occur atx=π/2+n*π for any integern Plot key points within one period. For
x=0 y=1/2*sec(0)=1/2 Forx=π y=1/2*sec(π)=−1/2 Sketch the curves. Draw U-shaped branches that approach the vertical asymptotes, starting from the local extrema at
(0,1/2) and(π,−1/2)
Final Answer
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