out llor;
off nat;
load "algint";


(x-(2-i))*(x-(2+i))*(x-(1+i))*(x-(1-i));


(x-(2-i))*(x-(2+i));

(x-(1+i))*(x-(1-i));

%-------------------------


int(1/( (x**2 + x +1)**2 ) ,x);

df(atan(a*x + b),x);

df(asin(x),x);


int(1/ (x**4 +1 )  ,x);

%-------------------------

int(1/( (x**2 + a*x + b) ) ,x);


df(1/log(sin(x)),x);



df(1/(1+x**2),x);

df(sin(x)/cos(x),x);

factor x;

(x**2 +a*x + b)*(x**2 +c*x + d);

%--------------------------------

(a-b)*(a**2 + a*b + b**2);



shut llor;
bye;
end;