Let R be the region enclosed by the graph of y-1+(cos^4 x),

Last updated: 7/5/2022

Let R be the region enclosed by the graph of y-1+(cos^4 x), the x-axis, and the lines x=-2/3 and x=2/3 The closest integer approximation of the area of R is (A) 0 (B) 1 (C) 2 (D) 3 (E) 4