F (1) = - 2

f (2) = 5

(f (n) = f (n - 2). f (n - 1)

f (3) =

f (3) = - 10

Step-by-step explanation:

The formula given is f (n) = f (n - 2). f (n - 1)

For the first term in the quotient:

if n = 3 then substitute the result of f (3 - 2) = f (1) spot, which is given by the number - 2.

for the second term in the quotient:

if n = 3 then substitute the result of f (3 - 1) = f (2) spot, which is given by the number 5.

Now combine this and you get:

f (3) = - 2 * 5

f (3) = - 10