앱을 추가 설치하면 다차방정식에서 허수근을 구할 수 있다고는 합니다. http://www.dummies.com/education/graphing-calculators/the-plysmlt2-app-on-your-ti-84-plus-calculator/
This app is truly multi-dimensional! Ply is short for Polynomial Root Finder. Smlt2 is short for Simultaneous Equation Solver. Unlike the Equation Solver and the Solve function, this app can find imaginary or complex solutions.