The minimum number of subintervals using Simpson's rule is [Round up to the nearest even whole number.)6 Estimate the minimum number of subintervals to approximate the value of 2 sin (x + 6)dx with an error of magnitude less than 4 x10* * using -3 a. the error estimate formula for the Trapezoidal Rule. b. the error estimate formula for Simpson's Rule. The minimum number of subintervals using the trapezoidal rule is