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All Journal Griya Journal of Mathematics Education and Application Leibniz: Jurnal Matematika
Lalang, Andrian Runtius
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Education Mathematics

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Penerapan Metode Interpolasi Newton dalam Menentukan Angsuran Kredit Tanpa Agunan Bank Nay, Florianus Aloysius; Lalang, Andrian Runtius
Leibniz: Jurnal Matematika Vol. 3 No. 2 (2023): Leibniz: Jurnal Matematika
Publisher : Program Studi Matematika - Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas San Pedro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59632/leibniz.v3i2.282

Abstract

Penelitian ini tentang penerapan metode numerik untuk menentukan nilai angsuran KTA yang ada pada Bank Mandiri, Bank BCA dan Bank BNI di Yogyakarta pada tahun 2018. Metode numerik yang digunakan dalam penelitian ini adalah metode interpolasi Newton. Dari hasil perhitungan dapat diketahui besar angsuran angsuran pada bulan tertentu dengan menggunakan data angsuran yang telah diketahui tanpa memperhatikan bunga. Hasil penelitian menunjukkan bahwa Bank BCA dan Bank BNI memiliki angsuran yang lebih rendah dari Bank Mandiri. Berdasarkan penelitian yang diperoleh maka disarankan untuk memilih Bank BCA atau Bank BNI jika ingin melakukan peminjaman sebesar Rp.5.000.000
Analisis Kesalahan dalam Menyelesaikan Soal Struktur Aljabar Berdasarkan Prosedur Newman dengan Representasi Graf Bipartite Novandini, Carolin; Lalang, Andrian Runtius; Simamora, Indah
Griya Journal of Mathematics Education and Application Vol. 5 No. 4 (2025): Desember 2025
Publisher : Pendidikan Matematika FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/griya.v5i4.962

Abstract

This study aims to analyze the types of errors made by students in the Mathematics Education Study Program, taking the Algebraic Structures course, based on Newman's Theory. The research method used was descriptive qualitative research. The subjects were 30 students who obtained test scores below 60. The data analysis technique used was an interactive technique consisting of three activity flows: data reduction, data presentation, and conclusion drawing/verification. The data presentation used bipartite graphs and, where is the set of students and the set of error types, according to Newman. The results showed that the most common type of problem transformation error was found in problem number 1 (10 students), while the most common type of problem understanding error (comprehension error) was found in problem number 2 (19 students). Therefore, several follow-up actions are needed to strengthen a deeper understanding of the definitions and properties of Algebraic Structures, namely groups and rings, and the use of non-routine and varied problems.
Co-Authors Florianus Aloysius Nay Novandini, Carolin Simamora, Indah