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fib

n:5;

fib(19);

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

Calculate

fib

n:5;

fib(100000);

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

Calculate

fib-true

d:a and b;

e:a and c;

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

Calculate

fib-fibtophi

f(x,y,z):=5*fib(x)*fi...

f(10,20,15);

fibtophi(fib(x+y-z));

Calculate

fib-makelist

lucas(n) := fib(n-1) ...

a[0]: 1;

a[1]: 1;

Calculate

fib

fib(30);

Calculate

fib

fib(n) +fib(n+1);

Calculate

fib

n:5;

fib(n);

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) 

Related Help

Help for Fib