Find the general solution using the method of variation of parameters for a particular solution (a) y"-3y'+2y= cos (e*) (b) y"+y tan x

Angela rode his bike around a bike trail that was 1/4 of a mile long he rode his bike around the trail 8 * angelo says he wrote a total of 8/4 miles to russell says he's wrong and he actually and says that he actually wrote to my who is corrupt use words and trying to explain how you know.

What are the coordinates of the midpoint of ab? ,1/2) /2,-1) ,-3/2) /2,-2)

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?