3. The populations of two somewhat interacting biological organisms Xand Y, generation
after generation, follow the pattern
X(n+1) = 6Xn - 4Yn, Y(n+1) = 2Xn,
in which Xnand Yn are the populations of the nth generation of Xand Y, respectively.
If X0=Y0=1, find out the populations Xnand Ynfor all nís, the positive integers.