Fortunately, TI Nspire CX users can do Step by Step Integration using Calculus Made Easy at www.TiNspireApps.com . Just enter a function of one or more variables and get the solution immediately. Watch this brief video showing Step by Step Integration:
Just enter a function of one or more variables to find single or multiple integrals – step by step. That involves Integration by parts, U-Substitution, Integration by Partial Fractions, Double and Triple Integrals and Polar Coordinates.