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Penerapan Integral Lipat Dua dalam Prediksi Jumlah Penduduk di Kota Tebing Tinggi Tahun 2030 : Visualisasi 3D Menggunakan Geogebra
Petra Putri Sarinah Pandiangan
; Alvi Sahrin Nasution
; Grace Amelia Purba
; Rizka Nabila Damanik
; Endang Lyfia Saragih
; Farel Al Azmi
Bilangan : Jurnal Ilmiah Matematika, Kebumian dan Angkasa
Vol 3
, No 6
(2025)
Tebing Tinggi City, which has a strategic position in North Sumatra, is experiencing changes in population growth that need to be predicted for development planning purposes. The purpose of this study is to forecast the population of Tebing Tinggi City in 2030 by applying the Double Integral method, and visualize the results in 3D using GeoGebra. The method used is a quantitative approach with a case study, where the population density function is created based on secondary data from the Central...
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Penerapan Konsep Bunga Majemuk dalam Analisis Pertumbuhan Modal Usaha Penjual Sayur di Pasar Tradisional MMTC Medan
Arnah Ritonga
; Endang Lyfia Saragih
; Grace Amelia Purba
; Petra Putri Sarinah Pandiangan
; Rizka Nabila Damanik
Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam
Vol 4
, No 2
(2025)
This study analyzes the application of the compound interest concept in evaluating capital growth among vegetable vendors at the MMTC Traditional Market in Medan, North Sumatra. The research highlights the low level of financial literacy among micro-entrepreneurs in Indonesia, which currently stands at only 38.03%, and its implications for business sustainability. Traditional market traders generally employ basic bookkeeping practices focused solely on daily cash flow, without considering the ti...
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Estimasi Volume Air Waduk Lau Kawar Menggunakan Pendekatan Integral Volume Kulit Tabung
Rizka Nabila Damanik
; Grace Purba
; Klara Laoli
; Bobby Delon Togatorop
; Windy Suryani
; Suvriadi Panggabean
Algoritma : Jurnal Matematika, Ilmu pengetahuan Alam, Kebumian dan Angkasa
Vol 3
, No 3
(2025)
This study aims to estimate the water volume of Lau Kawar Reservoir using the cylindrical shell method of integral calculus. The reservoir is assumed to be a perfect cylinder with a radius of 564 meters and a depth of 8.45 meters. The volume is calculated using both the shell method and the standard analytical formula for cylinders. The result shows a water volume of 8,437,640.45 m³. Both methods produced identical results with an absolute error of 0.00 m³. This proves that the shell method is h...
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Penerapan Distribusi Normal Dalam Pengukuran Tinggi Badan Mahasiswa FMIPA Universitas Negeri Medan 2024
Arnah Ritonga
; Endang Lyfia Saragih
; Grace Amelia Purba
; Petra Putri Sarinah Pandiangan
; Rizka Nabila Damanik
; Farel Al Azmi
Bilangan : Jurnal Ilmiah Matematika, Kebumian dan Angkasa
Vol 3
, No 2
(2025)
This study explores the application of the normal distribution in analyzing the height data of Mathematics Education students at FMIPA Universitas Negeri Medan in 2024. Employing a quantitative descriptive-analytic methodology, the research involved collecting primary data from 10 randomly selected students through a questionnaire-based survey. Descriptive statistical analysis revealed a mean height of 161.4 cm with a standard deviation of 8.79 cm. The median height was found to be 164 cm, while...
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Analisis Perbandingan Tingkat Depresi pada Mahasiswa Angkatan 2022 dan 2024 Jurusan Biologi Universitas Negeri Medan
Findi Septiani
; Endang Lyfia Saragih
; Grace Amelia Purba
; Petra Putri Sarinah Pandiangan
; Rizka Nabila Damanik
Algoritma : Jurnal Matematika, Ilmu pengetahuan Alam, Kebumian dan Angkasa
Vol 3
, No 2
(2025)
Mental health disorders, particularly depression, are becoming an increasing concern among university students. This study aims to analyze the comparative levels of depression among students from the 2022 and 2024 cohorts in the Biology Department at Universitas Negeri Medan. The research employs a mixed-method approach, integrating both quantitative and qualitative methodologies. Data were collected through questionnaires distributed to 51 active students. The results indicate that students fro...
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