THE GENERALIZED SUNDMAN TRANSFORMATION AND DIFFERENTIAL FORMS FOR LINEARIZING THE VARIABLE FREQUENCY OSCILLATOR EQUATION AND THE MODIFIED IVEY’S EQUATION. FJS [Internet]. 2023 Jul. 8 [cited 2025 Sep. 12];7(3):167-70. Available from: http://www.fjsadmin.fudutsinma.edu.ng/index.php/fjs/article/view/1859