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fib

d:a and b;

e:a and c;

f1:a and (not b) and ...

Calculate

fib

n:5;

fib(1000);

F(n):= n-2 + n-1;

Calculate

fib

fib(0);

fib(1);

fib(2);

Calculate

fib-inf-limit-load

load(solve_rec);

solve_rec(f[n]=f[n-1]...

fib(n);

Calculate

fib

n:5;

fib(100000);

F(n):= n-2 + n-1;

Calculate

fib

fib(31);

Calculate

fib-makelist-sum

makelist(sum(i*fib(i)...

Calculate

fib

n:5;

fib(10000);

F(n):= n-2 + n-1;

Calculate

fib

Run Example
(%i1)fib(n) ;
(%o1)                               fib(n)
(%i2) 
Run Example
fib(80);
(%o1)                          23416728348467685
(%i2) 
Run Example
fib(31);
(%o1)                               1346269
(%i2) 

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Help for Fib