Judul: Pertumbuhan Tanaman Krisan Pot (Chrysanthenumm morivolium var Rst) pada Berbagai Konsentrasi Pemupukan  dan Alar
Abstrak: Clirysanthemzon spp. are cultivated flowers as a member of Asteraceae have a high requirement of macro nutrients and regulation height with growth retardants chemical. The aims of the researclt was to find out the most accurately fertilizer concentration composition and the most compatibility of alar for growth of pot mutn (Clnysanthemunz morfolium var Rsl). This research used Randomized Complete Factorial Design consisting 2 factors i.e. concentration of fertilizer and concentration of alar by 5 replication for each. Coinbinations of fertilizer are used CaNO,, KNO,, DAP, and MgSOn. The pot mum with treatment fertilizer of 80gl1001 CaNO;, 25gI1001 KNO,, 35gl1001 DAP, 25gl1001 MgSOR, and alar of 2,5g/1 (P3A2) showed the best growth level in number of lateral buds, number of blossom flowers, diameter flower and total chlorophyll concentration. The increasing of fertilizer in this research was not significant in all treatments, except number of lateral buds. The pot mum growth with alar are significant in height of plant, number of lateral buds, internode, leaf colour, length of pedicle, and number of bud flowers.
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Judul: Pertumbuhan krisan pot, Chrysanthemum morifolium Ramat var. Sheena yellow pada berbagai nilai EC, Electrical conductivity
Abstrak: Chrysanthemum sp. were cultivated flowers as a member of Asteraceae famili which need place, water, nutrition and oxygen. The nutrition were obtained from fertilizing both macro and micro nutrients. The aims of the research were to see the growth of pot mum (Chrysanthemum morifolium Ramat var Sheena yellow ) at EC value from 0.5 mS/cm to 2.5 mS/cm and to obtain the most optimum EC value for the growth of pot mum. This research used randomized one factor rendomized complete design, i.e EC value fertilizer with 10 repetition for each. Treatment CaNO3, KNO3, MgSO 4 , and diamonium Phosphate (DAP) fertilizer were used as control. The fertilizer that used as a treatment was AB mix liquid fertilizer from Parung Farm with EC value 0.5 mS/cm, 1 mS/cm, 1.5 mS/cm, 2 mS/cm and 2.5 mS/cm. The pot mum with EC value treatment 2.5 mS/cm (E) showed the best growth level in high plant, number of internode, number of leaf, flower diameter, total fresh weight and total dry weight. The pot mum with EC value treatment 1.5 mS/cm (C) showed the best growth level in width of leaf, length of leaf and stalk diameter.
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Judul: Invers dari Matriks Tridiagonal Jacobi
Abstrak: Suatu matriks berukuran n×n dinamakan matriks tridiagonal jika untuk . Karya ilmiah ini memberikan algoritma yang mudah untuk menemukan invers ( dari matriks tridiagonal Jacobi yang simetrik dan nonsimetrik. Setiap elemen pada matriks tridiagonal ini adalah bilangan real. Terdapat 3 lema dan 2 teorema untuk menentukan . Lema pertama menunjukkan persamaan utama dalam membuktikan lema-lema dan teorema-teorema selanjutnya. Invers dari matriks yang simetrik dibuktikan oleh lema kedua yang menunjukkan elemen-elemen baris ke- dari . Selanjutnya, lema kedua dilengkapi dengan teorema pertama yang menunjukkan elemen-elemen dengan . Invers dari matriks yang nonsimetrik dibuktikan oleh lema ketiga yang menunjukkan elemen-elemen dengan dan elemen-elemen dengan dibuktikankan oleh teorema kedua.
Keyword: symmetric, nonsymmetric, matrix