A NEW 2-POINT DIAGONALLY IMPLICIT VARIABLE STEP SIZE SUPER CLASS OF BLOCK BACKWARD DIFFERENTIATION FORMULA FOR SOLVING FIRST ORDER STIFF INITIAL VALUE PROBLEMS. FJS [Internet]. 2025 Jul. 22 [cited 2025 Aug. 31];9(7):275-82. Available from: https://fjs.fudutsinma.edu.ng/index.php/fjs/article/view/3799