? atan
?? atan

??
??refcard
??refcard-nf
??tutorial
??? determinant

a=1
a
a;

f(x) =
{
    my (a = 2*x); \\ local variables
    my (b = a^2);
    return (a + b);
}

1+1
57!
2/6
7\2
7%2
(1+I)^2
Mod(2,5)^3
Mod(x, x^2+x+1)

Pi
log(2)
\p100
log(2)
exp(%)
log(1+x)
exp(%17)

factor(91) 
factor(91+I)
factor(x^4+4)
factor((x^4+4)*I)
factor((x^4+1)*Mod(1,a^2-2))
factor((x^4+4)*Mod(1,13))

V = [1,2,3];
W = [4,5,6]~;
V*W
M*W
U = [1..10]
V[2]
W[1..2]
M[2,2]
M[1,]
M[,2]
M[1..2,1..2]

[n^2|n<-[1..10]]
[n^2|n<-[1..10],isprime(n)]
[a,b] = [1,2];
print("a=",a," b=",b)