发布于 2024-10-01
摘要
Problem I: Abel’s formula and Liouville’s formula. We are trying …
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发布于 2024-09-27
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1. 一个直三棱柱体，如下图所示，其中，是的中点，是的中点。已知，。求与的夹角与距离. 以为标准右手直角坐标系,则,,,则,. 2 …
发布于 2024-09-09
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Problem I Consider the ODE (1), where is an nonzero constant and …
发布于 2024-08-31
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1. 给出位于第一象限，与正-轴夹角为，且长度为的向量. 此向量. 2. 求平行于向量，长度为的向量. [这样的向量称为单位向量] …
发布于 2024-06-29
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1. Let with . Find . Consider there exists such that is upper-tri …
发布于 2024-06-29
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Let be an -dimensional inner product space. 1. Prove that a norma …
发布于 2024-06-29
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1. Check the following functions are inner products: (a) Let be t …
发布于 2024-06-29
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1. Determine the nullity of the linear map given by , where . 2. …
发布于 2024-06-29
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1. If and are both 6-dimensional subspaces of the rel vector spac …
发布于 2024-06-29
摘要
1. Find all complex numbers so that . Write your solutions in the …