On interval 0<=x<2 pi, where are the x-intercepts of y= cos (2x)? A

pi/2 and 3pi/2

B

0, pi, and 2 pi

C

pi/2, pi , and 3pi/2

D

pi/4, 3pi/4, 5 pi/4, and 7pi/4

Given the parent function of [tex]f(x)=x^4[/tex], what change will occur when the function is changed to [tex]f(\frac{1}{2} x)[/tex]?

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?

Use the method of cylindrical shells to find the volume v generated by rotating the region bounded by the curves about the given axis.y = 7ex, y = 7e^-x, x = 1; about the y-axis