#! /usr/bin/calc define x1(t) {return t;} define x2(t) {return t;} define x3(t) {return 1/(2*power(t,2));} define h(t) {return re(sqrt(2 + 1/power(t,6))) ;} define f(x) {return sqrt(1+1/power(x,4));} define riemann(inicio, fim,delta){ local soma=0; local x=inicio; while(x