3. Methods for solving initial-value problems also can be used to compute definite or indef- inite integrals. For example, we can compute by solving the initial-value problem Set ds [x' = e−12 x(0)=0 on the t-interval [0, 2]. Do this, using the Taylor-series method of order 4. From a table of the error function 2 erf(1) = e-s² ds