This function is very important:

sqrt(abs(((((sqrt(a+(b/c))*(1/power(f, -g)))/((power(d,2))-cos(power(e, 3))))+(power(h,(i/(j+k)))/(-ln(l))))/(power(m, (n+o)),(1/3))*((3*tan(p)-(power(tan(p),3)))/(1-3*(power(tan(p),2))))))*(sqrt((q+r)/(sqrt(s)))/(fact(t))))