in fact mid-pt thm may be a better for proving AE//OM ! |
1) You prove AE//OM <ADO=<DAO <DOM=<ADO <MOB=<DAO <DOM=<MOB 2.1) Domain (for x) is -4<x<2 2.2) To find max of A(x), just consider the height of tri. PRQ (PR is its base) since PR is a constant, A'(x) is directly prop. to its height (A'(x) represents the area of tri. PRQ) ie find the max height therefore, A(x)=2A'(x) |