This study aims to examine the effect of the Khan Academy learning platform on students' achievement in mathematics lessons. In the study, the difference between the achievement levels of the experimental and control groups was tested using a pre-test post-test control...
by choosing a right-hand side b ∈ C(A), finding the particular solution (by setting the free variables to zero and solving for the pivot variables), and then adding in the null-space vectors to describe all possible solutions.