1Deptartment of Mathematics, Dhaneshwar Rath institute of engineering and management studies,
Tangi Cuttack-754022 Odisha, India.
2Deptartment of Mathematics, Berhampur University Berhampur-760007 Ganjam, Odisha, India.
3Deptartment of Mathematics, Sailabala Women’s College (Auto.) Cuttack, Odisha, India.
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