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第一章算术 Arithmetic
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分数、小数和百分比 fractions, decimals and percent
分子 numerator part
分母denominator whole(the base of the percent)
Triangle inequality: |a+b|<=|a|+|b|
错题:
n=a^x×b^y×c^z a b c为质数 n的positive factors有(x+1)(y+1)(z+1)个
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87是合数!!
二三章 Algebra 代数
遇到real integer一定一定要小心!!!
0的算术平方根仍为零。 化简根式simplifying radicals。
Coefficient 系数 constant 常数 estate 遗产
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Functions 函数 自变量independent variable
The terms 5z2 and -z2 are called like terms
20y2 + 6y -17 = 0 A quadratic equation in one variable, y
(x,y): ordered pair
simultaneous equations
Simultaneous equations 联立
quadratic equation 二次方程
The domain of a function is the set of all permissible inputs.
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dimes 10分硬币 quarters 25分硬币
12周
3
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rebate 会扣
times as many apples as pears!
第四章集合 排列组合 概率
Intersection交集 progressions 级数
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错题:
median!!中位数!!
第五章 geometry 几何
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