1. The integral of e-2 is important in probability and statistics and many other areas, but it doesn't have an elementary antiderivative, yet we can find its value given some special limits of integration. You must show all work for this problem. Computational software is not permitted. (a) Evaluate the integral (b) Use (a) to find the value of R (c) Use (b) to find (d) Use (c) to evaluate where dx = dr₁dr2...drn. [ e-² dr ! dr R Σ