https://elated-raman-42e0c2.netlify.app/tags/symbolic_computation/Recent content in Symbolic_computation on Sawyer Zheng's BlogHugozh-cnMon, 07 Mar 2022 16:55:27 +0800https://elated-raman-42e0c2.netlify.app/post/notes/python/sympy/Fri, 10 Sep 2021 00:00:00 +0000https://elated-raman-42e0c2.netlify.app/post/notes/python/sympy/<div id="outline-container-headline-1" class="outline-2"> <h2 id="headline-1"> 矩阵 </h2> <div id="outline-text-headline-1" class="outline-text-2"> <ul> <li> <p>sympy.Matrix</p> <ul> <li> <p>方法和属性</p> <ul> <li> <p>shape</p> <ul> <li>mat.shape</li> <li>sympy.shape(mat)</li> </ul> </li> <li> <p>list 化</p> <ul> <li>mat.tolist()</li> </ul> </li> <li> <p>点积</p> <ul> <li> <p>matA * matB</p> <ul> <li>和 numpy 不同， np.dot 才可以</li> </ul> </li> </ul> </li> <li> <p>创建矩阵</p> <ul> <li> <p>单位阵</p> <ul> <li>sympy.eye(size)</li> </ul> </li> <li> <p>ones</p> <ul> <li>sympy.ones(…)</li> </ul> </li> <li> <p>zeros</p> <ul> <li>sympy.zeros(…)</li> </ul> </li> <li> <p>对角阵</p> <ul> <li> <p>sympy.diag(value1, value2, …)</p> <ul> <li>直接输入对角元素</li> </ul> </li> <li> <p>sympy.diag(value1, mat1, mat2, …)</p>