Homework Problem 9, Due Friday February 20.
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(a) Write a function to generate  N  random points (X,Y) 
from the triangle with longest side 10 located 
along the x-axis of the x-y Cartesian plane, with midpoint 
at the origin (0,0), and with third vertex at (1,4).

Make sure that you write this function so that it parallelizes 
the function evaluations when N > 1 !

(b) Write an alternative function to do the same task as 
in (a), by a Rejection method based on randomly generated 
pairs in the rectangle  [-5,5] x [0,4]

Test your functions to make sure that they both produce
UNIFORMLY distributed points in the triangle !