Xudoyberdiyev Norto‘ra Qobilovich, and Karimov Navro‘zbek Abdurasul o‘g‘li. “Y= ???? ???? ∗ ???? ???????????? TRIGONOMETRIK FUNKSIYANING YUQORI TARTIBLI HOSILASINI HISOBLOVCHI REKURENT FORMULA MAVJUDMI?”. TADQIQOTLAR.UZ 39, no. 4 (June 4, 2024): 75–76. Accessed September 20, 2024. http://tadqiqotlar.uz/index.php/new/article/view/3601.