Key points about one- and two-step linear equations ... To solve an equation, inverse operations close inverse operation The opposite of a mathematical process, eg, the inverse of × 5 is ÷ 5.

Jean-Pierre Florens, Joël L. Horowitz, Ingrid Van Keilegom, Bias-Corrected Confidence Intervals in a Class of Linear Inverse Problems, Annals of Economics and Statistics, No. 128 (December 2017), pp.

Moreover, advances in inverse source problems for hyperbolic equations have tackled the challenges posed by time-dependent coefficients, using iterative thresholding algorithms and adjoint systems ...