GRE的数学考试部分: 两个30分钟的部分,每个部分30道题。 第1题~第15题:2个数比较大小;第16题~第20题:计算及应用;第21题~第25题:图表分析推理。以下我们为您整理的GRE考试常用公式:
=a2-b2 2=a2+2ab+b2 2=a2-2ab+b2
3=a3+3a2b+3ab2+b3 3=a3-3a2b+3ab2-b3
一元二次方程ax2+bx+c=0的解x , =/2a
Simple Interest:利息Interest=本金Principal3时间Time3利率Rate。
Compound Interest:A=n;A为本利和,P为本金,R为利率,n为期数。
Discount=Cost3Rate of Discount Distance=Speed3Time
Pythagorean Theorem:直角三角形两直角边的平方和等于斜边 的平方。
多变形的内角和:180,总对角线数为n/2条,从每一个顶点引出的对角线数为条;式中:n为多边形的边数
平面直角坐标系中,A和B是任意两点,C是线段AB的中点,则x=/2,,y=/2,线段AB两端点间的距离=
平面图形的周长和面积:
PerimeterArea
Triangle三边之和/2
Square边长4边长的平方
Rectangle2长宽
Parallelogram2底高
Trapezoid四边之和高/2
Rhombus边长4两条对角线之积的1/2
Circle2dr2
立体图形的表面积和体积
VolumeSurface Area
Rectangular Prism长宽高2
Cube棱长的立方6棱长棱长
Right Circular Cylinderr h+ 2r2
Sphere4r3/34r2
Right Circular Coner2h/3lr/2
Survey shows holiday preference
Girl's death spark calls for child services oversight
Family healthcare offered to eco-city residents
Urban shoppers shifting to online purchases
Nation ‘a strong Games candidate’
Candid exchange key to Biden's visit
Dialogue 'key to relations'
Continuity in DPRK policies expected
Israel slams nuclear agreement with Iran
System for organ donors tested
US Ambassador Locke to leave post next year
Kunming animal park bundles up
Moon rich in natural resources, experts say
Group claims Tian'anmen attack
Thai rallies maintain pressure
Apple sends in experts to probe employees' deaths
Hershey hits sweet spot with deal for China confectionery Golden Monkey
Bar lowered for private pilots
Smog disrupts daily life in Nanjing
200 foreigners expelled from Beijing this year
South Africa commemorates Mandela with day of prayers
Screen time leads to bigger waistlines
Macao packs a big punch
Erupting volcano forces villagers to flee in Indonesia
Parents urged to supervise children's TV-viewing habits
Rare riot jolts Singapore
Kerry will visit Israel to discuss Iran nuclear issue
Chang'e-3 success sparks star-gazing craze
Xi thanks Clinton for furthering ties
Signer claims 'schizophrenic' moment at Mandela event
| 不限 |
| 英语教案 |
| 英语课件 |
| 英语试题 |
| 不限 |
| 不限 |
| 上册 |
| 下册 |
| 不限 |