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Utilitarianism Last time we considered three questions one might ask an ethical theory to answer i)Which acts are right and which are wrong? Which acts ought we to perform(understanding the\ought as a moral ii)What makes a particular action right or wrong? What is it about the action that determines its moral status? 111) How do we know what is right and wrong? There are a variety of strategies for answering(iii). One might hold e. g. that moral truths are revealed by god and
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一、逆矩阵的定义 定义对于n阶方阵A,如果有一个n阶方阵B,使 得 AB=BA=E. 则称矩阵A是可逆的,并把方阵B称为A的 逆阵(inverse matrix)
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al Identity ll Problem of synchronic identity for persons: under what conditions are two simultaneous person-events events in the life of the same person? Problem of diachronic identity for persons under what conditions are two person-stages stages in the life of a single person. In particular, what makes a particular person-stage a continuation of me as I am right now? Background desiderata: an account of personal identity should allow for the possibility of anticipation and memory, i.e., of individual psychological connections between different person stages. It should also allow us to justify our practices of
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对应特征值礼=-1只有1个线性无关的特征向量,而特征方程的基础解系为5,全体特征向量为x=k1l1(k1≠0)例9设方阵A的特征值A1≠2,对应的特征向量分别为x1,x2,证明: (1)x1-x2不是A的特征向量;
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一般说来,低阶行列式的计算要比高阶行列式的 计算要简便,于是我们自然地考虑到用低阶的行列式 来表示高阶的行列式的问题。为此,先引入余子式和 代数余子式的概念。 定义在n阶行列式D=(a中,把元素在的 第i行、第列划去,剩下的元素按原来的相对位置形 成的n-1阶行列式叫做元素的余子式,记作M称 A=(-1)做元素a的代数余子式
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The Problem of Induction Although James and Clifford disagree about the reasonableness of belief in a special class of propositions(when they constitute a genuine choice for us), they agree that in the majority of cases empirical investigation and the scientific pursuit of evidence is at least a, if not the proper way to proceed in forming beliefs. It
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上一节定理1说明,n阶矩阵A与对角阵相似的 充要条件是A有n个线性无关的特征向量。本节 说明当只有m(m
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如上面的讨论中看到的,一般的方阵不一定可对角化, 但对于在应用中常常遇到的实对称矩阵(满足A'=A 的实矩阵),不仅一定可以对角化,而且解决起来 要简便得多,这是由实对称矩阵的特征值和特征向 量的特性所决定的。 定理1实对称矩阵的特征值为实数。 设复数为实对称矩阵A的特征值,复向量x为对应的 特征向量,即Ax=λx,x≠0
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1. The\Wager\and the Practical Rationality Principle Practical Rationality Principle: The practically rational thing to do is the thing with the highest expected value(or utility \) Version A: Do the thing with higher expected value than all its competitors --In the case of a tie, neither action/belief is permitted Version B: Find the actions with highest expected value and perform whichever of them you like --In the case of a tie, Theism is practically rational. Just like choosing pie over cake 2. Evidentialism(Clifford)
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9.1概述 9.2D/A转换接DAC0832 9.3模/数转换器ADC0809
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