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fib

fib(80);

Calculate

fib

fib(-3);

Calculate

fib-sqrt

fib(n):=(%phi^n-(-%ph...

Calculate

fib-sqrt

f(x,y):=x*y;

f(4,4);

fib(n):=1/sqrt(5)*(((...

Calculate

fib-pochhammer

pochhammer (5, 2);

fib(4);

Calculate

fib

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

f(10,20,15);

Calculate

fib-ratsimp-sqrt

f(x,y):=x*y;

f(4,4);

fib(n):=1/sqrt(5)*(((...

Calculate

fib-numer-sum

sum(1/fib(n),n,1,1000...

Calculate

fib-sum

(sum(i*fib(i)^2,i,0,n...

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