If f(a + b) = f(a) + f(b) - 2f(ab) for all nonnegative integers a and b, and f(1) = 1, compute f(1986). ???????
2 Answers
Explanation:
Now,
Thus,
See below.
Explanation:
Considering
the difference equation
solving for
so if
and if
so
Now,
Thus,
See below.
Considering
the difference equation
solving for
so if
and if
so