HELP PLEASE! raph of the function to answer the following. rx) = cos(x) on the i
ID: 2911844 • Letter: H
Question
HELP PLEASE!raph of the function to answer the following. rx) = cos(x) on the i 2n interval [-2T, -2 2 (a) Find the x-intercepts of the graph of y fx). (Enter your answers as a comma-separated list.) (b) Find the y-intercepts of the graph of y x). (Enter your answers as a comma-separated list.) (c) Find the intervals on which the graph of y - o) is increasing and the intervals using interval notation.) graph of y x) is increasing and the intervals on which the graph of y - fx) is decreasing. (CEnter your answers increasing decreasing (d) Find the relative extrema of the graph of y a fx). (Enter your answers as a comma-separated list of ordered pairs.) relative maxima relative minima
Explanation / Answer
f(x) = cos x
a) x intercepts are (-pi/2 , 0) ( -3pi/2 , 0 ) , ( 3pi/2 , 0 ) , (pi/2 , 0 )
b) y intercept are (0,1)
c) increasing intervals ( -pi , 0 ) U ( pi , 2pi )
decreasing intervals ( -2pi , -pi ) U ( 0 , pi )
d) relative maxima = (-2pi,1) ,( 0,1) , (2pi,1 )
relative minima = ( -pi, -1 ) , (pi, -1 )
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