How do you graph #f(x)=-cos(x/2)#?

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Answer 1 · 2018-06-07T07:17:55

As detailed.

#f(x) = - cos (x/2)#

Standard form #y = A cos (Bx - C) + D#

#A = -1, B = 1/2, C = D = 0#

#Amplitude = |A| = 1#

#"Period " = (2pi) / |B| = (2pi) / (1/2) = 4pi#

#"Phase Shift " = -C / B = 0#

#"Vertical Shift " = D = 0#

graph{-cos (x/2) [-10, 10, -5, 5]}