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All Journal Bilangan: Jurnal Ilmiah Matematika, Kebumian dan Angkasa Jurnal Pendidikan dan Sosial Humaniora
Nurcahaya Br Zandroto
Universitas Negeri Medan
Humanities Astronomy Education Mathematics

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Pemodelan Konveksi Panas Pada Fluida Statis dan Dinamis Dalam Bentuk Persamaan Diferensial Orde 1 Eka Finanti Simamora; Nurcahaya Br Zandroto; Putri Tarigan; Vico Putra Sidauruk; Fevi Rahmawati Suwanto
Bilangan : Jurnal Ilmiah Matematika, Kebumian dan Angkasa Vol. 2 No. 4 (2024): Agustus : Jurnal Ilmiah Matematika, Kebumian dan Angkasa
Publisher : Asosiasi Riset Ilmu Matematika dan Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/bilangan.v2i4.124

Abstract

This article discusses the importance of understanding heat convection in fluids in the context of physics and engineering. Using first order Simple Differential Equations (PDS), we can analyze the temperature distribution in a fluid over time and space in high detail. PDS allows modeling heat convection by considering parameters such as temperature differences and fluid flow velocity. Numerical methods are used to complete the PDS computationally, while data collection techniques through literature studies provide an in-depth understanding of relevant theories and previous findings. With the application of PDS and numerical methods, we can better understand and predict heat transfer in fluids, which has wide applications in engineering, biology, and physics. In conclusion, this article provides a comprehensive insight into the use of PDS in the analysis of heat convection in static and dynamic fluids, with a focus on mathematical and computational approaches to better understand this phenomenon.
Analisis Kesalahan Mahasiswa Pendidikan Matematika Universitas Negeri Medan dalam Menegasikan Definisi Limit Fungsi Eka Finanti Septiana Simamora; Imel Simanungkalit; Nurcahaya Br Zandroto; Putri Br Tarigan; Michael Cristian Simanullang
Khatulistiwa: Jurnal Pendidikan dan Sosial Humaniora Vol. 5 No. 2 (2025): Juni : Khatulistiwa: Jurnal Pendidikan dan Sosial Humaniora
Publisher : Pusat Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/khatulistiwa.v5i2.5823

Abstract

This study aims to identify students' errors in negating the definition of function limits using the Newman Error Analysis (NEA) approach. The method used is descriptive qualitative, with three selected students from one class totaling 32 people through a purposive sampling technique. Data were obtained from students' written answers to the problem of negating the definition of function limits. The results of the analysis show that students make various types of errors, such as transformation errors, understanding errors, reading errors, process skill errors, and coding errors. These errors reflect students' weak understanding of formal logic structures and the use of symbols in the context of mathematics, especially in the negation process which requires a deep understanding of the meaning of quantifiers and empowerment. This conclusion emphasizes the importance of strengthening mathematics learning and teaching strategies that emphasize conceptual understanding, not just procedural. In addition, learning evaluations need to be designed to explore students' thinking processes more thoroughly in order to accurately identify sources of errors.
Co-Authors Eka Finanti Septiana Simamora Eka Finanti Simamora Fevi Rahmawati Suwanto Imel Simanungkalit Michael Christian Simanullang Putri Br Tarigan Putri Tarigan Vico Putra Sidauruk