Find the relative extrema of the trigonometric function in the interval (0, 2). Use a graphing utility to confirm your results. See Examples 6 and 7. (If an answer does not exist, enter DNE.)

y = 14 cos(x) + 7 cos(2x)

relative maximum (x,y) = ??

relative minimum smallerx-value (x,y) = ??

largerx-value (x,y) = ??