Use the Integral Test to determine whether the infinite series is convergent. sum_(n=18)[infinity](n²)/((n³+4)⁽⁽⁷⁾/⁽²⁾⁾⁾ To perform the integral test, one should calculate the improper integral of the function f(x) = (x²)/((x³+4)⁽⁽⁷⁾/⁽²⁾⁾⁾over the interval [18, infty).
