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20 1 1 Comprehensive Test for Graduating Class of Guangzhou Senior Middle School (1) Mathematics 13.
Because f (1) = f (2-1) = f (2)/f (1) and f( 1)=2, it is deduced that f(2)=4.

Similarly, if f (2) = f (3-1) = f (3)/f (1), it can be concluded that f(3)=8.

You can get F(5)=32 by analogy.

And f (0) = f (1-1) = f (1)/f (1) =1.

And the original formula = f (5) f (4) f (3) ... f (0) ... f (-3) f (-4).

=f(5)f(4-0)f(3-0)f(2-0)...f(0)...f(0-2)f(0-3)f(0-4)

= f(5)f(4)f(3)f(2)f( 1)f(0)f(0)f(0)f(0)f(0)f(0)f(0)f( 1)f(2)f(3)f(4)= f(5)f(0)= 32 * 1 = 32

So the result is 32.