The integral 1 0 ex2 dx cannot be evaluated by finding an antiderivative. find a lower bound for the integer n to use for the trapezoidal rule in order to yield an error of no more than 10−5 for the approximation of the integral. you may want to use one of the following inequalities. if f (x) = ex2, then f " (x)≤ 6e and f iv(x) ≤ 76e for 0 ≤ x ≤ 1.