谁在削木头
发表于 2025-3-23 09:47:44
Basic Principles of Discretization Methods,sed form, but such solutions can be obtained only in quite simple cases (e.g. equations with constant coefficients over regularly shaped regions), and moreover the ‘closed form’ often involves such troublesome objects as indefinite integrals, infinite series and special functions. Infinity is not to be disposed of lightly.
Overthrow
发表于 2025-3-23 14:22:13
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eardrum
发表于 2025-3-23 18:13:20
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inflame
发表于 2025-3-23 23:39:32
Solution of Large Systems of Linear Equations,computers by brute force. However, practical problems in three dimensions can easily lead to (say) 100 000 equations in as many unknowns. On even the biggest computer planned to exist the solution of such a system of equations is utterly out of the question unless some simplifying features are present of which advantage may be taken.
Vulnerable
发表于 2025-3-24 02:59:00
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相容
发表于 2025-3-24 08:36:53
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精确
发表于 2025-3-24 14:19:01
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实施生效
发表于 2025-3-24 16:20:50
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陈列
发表于 2025-3-24 21:56:06
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NAUT
发表于 2025-3-25 01:06:36
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