The foctor of 40 I this = 1,2,4,5,8,40
Answer: On the interval [25, 30] the function y = cos x is at it's minimum at x = 9pi or about 28.26.
The graph of y = cos x starts at 1 and moves in the shape of a wave from -1 to 1. It reaches it's first minimum value when x = pi. The period of the wave is 2 pi.
Therefore, it is at its lowest value at the following values, 1pi, 3pi, 5pi, 7pi, 9pi... The value in our given interval is 9pi.
The <em><u>correct answer</u></em> is:
(0, 0)
Explanation:
The first equation in the system is f(x) = -x, for x < 0. This means when x=0, f(x) = f(0) = 0. Since we have the inequality x<0, this means at the point (0, 0), the point will be open and not filled in.