新gre数学重要考点：Commutative Law
<p> 2014新<span word="gre">gre</span>考试实施以来，不仅对写作部分茫然不知所措，就连我们所擅长的数学也甚是担忧，相信这其中的原因还是由于考生在新<span word="gre">gre</span>数学复习时没有把基础打牢。如果新版<span word="gre">gre</span>数学基本考点都没有复习到，如何能拿到分数呢?所以说，想要新版<span word="gre">gre</span>数学考好，复习的时候一定要把基本概念和重要考点都弄扎实。</p><p> 今天针对新版<span word="gre">gre</span>数学复习，小编给大家整理的是关于<span word="Commutative">Commutative</span> <span word="Law">Law</span>的相关内容，这些概念在考试中一定会考到的。希望考生能再接再厉，取得一个好成绩，突破新版<span word="gre">gre</span>数学难的困境。</p><p> <span word="Commutative">Commutative</span> <span word="Law">Law</span></p><p> <span word="Like">Like</span> <span word="real">real</span> <span word="numbers">numbers</span>, <span word="the">the</span> <span word="order">order</span> <span word="does">does</span> <span word="not">not</span> <span word="affect">affect</span> <span word="the">the</span> <span word="product">product</span> <span word="or">or</span> <span word="sum">sum</span> <span word="of">of</span> <span word="algebraic">algebraic</span> <span word="terms">terms</span>.</p><p> <span word="Example">Example</span>:</p><p> <span word="sum">sum</span>:3<span word="x">x</span>+5<span word="y">y</span>=5<span word="x">x</span>+3<span word="y">y</span>,2<span word="x">x</span>2+4<span word="y">y</span>+1=4<span word="y">y</span>+1+2<span word="x">x</span>2,+=+.</p><p> <span word="product">product</span>:3<span word="x">x</span>5<span word="y">y</span>=5<span word="y">y</span>3<span word="x">x</span>,2<span word="x">x</span>24<span word="y">y</span>=4<span word="y">y</span>2<span word="x">x</span>2,<span word="x">x</span>2<span word="yz">yz</span>=<span word="yx">yx</span>2<span word="z">z</span>=<span word="xzyx">xzyx</span>,=</p><p> <span word="Remember">Remember</span>:</p><p> <span word="Subtraction">Subtraction</span> <span word="is">is</span> <span word="not">not</span> <span word="commutative">commutative</span>:- -</p><p> <span word="Division">Division</span> <span word="is">is</span> <span word="not">not</span> <span word="commutative">commutative</span>:/ /</p><p> 由于美国数学基础教育的难度增加导致数学考试越来越难，但新<span word="gre">gre</span>数学复习考点都是高中时候学到的知识点，考生不要过于紧张，把基本概念弄明白，再记住一些新版<span word="gre">gre</span>数学必备的词汇，那么相信新版<span word="gre">gre</span>数学应该没有问题。</p><p> </p>
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