{"id":2204,"date":"2023-07-23T06:44:48","date_gmt":"2023-07-23T06:44:48","guid":{"rendered":"https:\/\/statorials.org\/id\/kuantitas-numerik\/"},"modified":"2023-07-23T06:44:48","modified_gmt":"2023-07-23T06:44:48","slug":"kuantitas-numerik","status":"publish","type":"post","link":"https:\/\/statorials.org\/id\/kuantitas-numerik\/","title":{"rendered":"Cara menghitung besaran suatu vektor menggunakan numpy"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\"><strong>Norma<\/strong> suatu vektor tertentu, x, dihitung sebagai berikut:<\/span><\/p>\n<p> <span style=\"color: #000000;\">||x|| = \u221a <span style=\"border-top: 1px solid black;\">x <sub>1<\/sub> <sup>2<\/sup> + x <sub>2<\/sub> <sup>2<\/sup> + x <sub>3<\/sub> <sup>2<\/sup> + \u2026 + x <sub>n<\/sub> <sup>2<\/sup><\/span><\/span><\/p>\n<p> <span style=\"color: #000000;\">Misalnya, asumsikan x = [3, 7, 4]<\/span><\/p>\n<p> <span style=\"color: #000000;\">Besarnya akan dihitung sebagai berikut:<\/span><\/p>\n<p> <span style=\"color: #000000;\">||x|| = \u221a <span style=\"border-top: 1px solid black;\">3 <sup>2<\/sup> + 7 <sup>2<\/sup> + 4 <sup>2<\/sup><\/span> = \u221a <span style=\"border-top: 1px solid black;\">74<\/span> = 8,602<\/span><\/p>\n<p> <span style=\"color: #000000;\">Anda dapat menggunakan salah satu dari dua metode untuk menghitung besaran vektor menggunakan paket <a href=\"https:\/\/numpy.org\/\" target=\"_blank\" rel=\"noopener\">NumPy<\/a> dengan Python:<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>Metode 1: Gunakan linalg.norm()<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong>n.p. <span style=\"color: #3366ff;\">linalg<\/span> . <span style=\"color: #3366ff;\">norm<\/span> (v)<\/strong><\/span><\/pre>\n<p> <span style=\"color: #000000;\"><strong>Metode 2: Gunakan Fungsi NumPy Kustom<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong>n.p. <span style=\"color: #3366ff;\">sqrt<\/span> ( <span style=\"color: #3366ff;\">x.dot<\/span> (x))\n<\/strong><\/span><\/pre>\n<p> <span style=\"color: #000000;\">Kedua metode akan memberikan hasil yang persis sama, namun metode kedua cenderung lebih cepat, terutama untuk vektor besar.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Contoh berikut menunjukkan cara menggunakan setiap metode dalam praktik.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Metode 1: Gunakan linalg.norm()<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Kode berikut menunjukkan cara menggunakan fungsi <strong>np.linalg.norm()<\/strong> untuk menghitung besaran vektor tertentu:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008000;\">import<\/span> numpy <span style=\"color: #008000;\">as<\/span> np\n\n<span style=\"color: #008080;\">#definevector\n<span style=\"color: #000000;\">x = np. <span style=\"color: #3366ff;\">array<\/span> ([3, 6, 6, 4, 8, 12, 13])\n\n<span style=\"color: #008080;\">#calculate magnitude of vector<\/span>\nn.p. <span style=\"color: #3366ff;\">linalg<\/span> . <span style=\"color: #3366ff;\">norm<\/span> (x)\n\n21.77154105707724\n<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Besar vektornya adalah <strong>21,77<\/strong> .<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Metode 2: Gunakan Fungsi NumPy Kustom<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Kode berikut menunjukkan cara menggunakan fungsi NumPy khusus untuk menghitung besaran vektor tertentu:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008000;\">import<\/span> numpy <span style=\"color: #008000;\">as<\/span> np\n\n<span style=\"color: #008080;\">#definevector\n<span style=\"color: #000000;\">x = np. <span style=\"color: #3366ff;\">array<\/span> ([3, 6, 6, 4, 8, 12, 13])\n\n<span style=\"color: #008080;\">#calculate magnitude of vector\n<\/span>n.p. <span style=\"color: #3366ff;\">sqrt<\/span> ( <span style=\"color: #3366ff;\">x.dot<\/span> (x))\n\n21.77154105707724\n<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Besar vektornya adalah <strong>21,77<\/strong> .<\/span><\/p>\n<p> <span style=\"color: #000000;\">Perhatikan bahwa ini cocok dengan nilai yang kita hitung menggunakan metode sebelumnya.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Sumber daya tambahan<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Tutorial berikut menjelaskan cara melakukan operasi umum lainnya menggunakan NumPy:<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/id\/kartu-digital\/\" target=\"_blank\" rel=\"noopener\">Cara memetakan fungsi ke array NumPy<\/a><br \/> <a href=\"https:\/\/statorials.org\/id\/numpy-tambahkan-kolom\/\" target=\"_blank\" rel=\"noopener\">Bagaimana cara menambahkan kolom ke array NumPy<\/a><br \/> <a href=\"https:\/\/statorials.org\/id\/array-python-numpy-ke-daftar\/\" target=\"_blank\" rel=\"noopener\">Cara mengonversi array NumPy ke daftar dengan Python<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Norma suatu vektor tertentu, x, dihitung sebagai berikut: ||x|| = \u221a x 1 2 + x 2 2 + x 3 2 + \u2026 + x n 2 Misalnya, asumsikan x = [3, 7, 4] Besarnya akan dihitung sebagai berikut: ||x|| = \u221a 3 2 + 7 2 + 4 2 = \u221a 74 = [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Cara menghitung besaran vektor menggunakan NumPy - Statorials<\/title>\n<meta name=\"description\" content=\"Tutorial ini menjelaskan cara menghitung besaran vektor menggunakan paket 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