Find all of the nonzero 512-point dft coecients x[k]; k = 0; : : : ; 511, of the sequence segment fx[0]; x[1]; x[2]; : : : x[511]g, where x[n] = 5 + 9 cos(19n=256 + =5). express your answers in polar form. (hint: the vast majority of the dft coecients are zero.)

The tuition costs, c, for a local community college are modeled by c(h) = 250 + 200h, where h represents the number of credit hours taken. the local state university has tuition costs, s, modeled by the function s(h) = 300 + 180h. how many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.

Terri makes a quilt using three sizes of fabric squares the side lenght of each fabric square is the square root of the area

D(5, 7). e(4,3), and f(8, 2) form the vertices of a triangle. what is mzdef? oa. 30° ob. 45° oc. 60° od 90°