遗留的问题: 329.investment principal $6000, quarterly interests: 1Q $124; 2Q $135 3Q$141, what annual interest rate can make yearly interest 10% 3.5%, 9%, 10.% 10.5%, 12.5% 请问为什么? Annul interest rate不是yearly interest rate? 注意复利计算: Annual Rate R,compounded by quarter, the yearly rate should be
(1+R/4)^4 ?????? 什么意思
459.2X^2-2XY-y^2=0, then (X+Y)^2=? 只能求出(x+y)^2= 3*x^2啊?
460.DS: X and Y both are two digits number, what is tenth digit of product of X and Y? 1: The tenth digit of X is 7 and tenth digit of Y is 4 (may is another number) 2: The unit digit both X and Y is less than 4 比如73*43 和 73*42的十位数就不同啊? 为什么是C?
461.A car travel, the max distance is a (a is given) and min hours is b ( b is given), ask for wether speed > 30? 是直接a/b比大小吗?
464.帐篷那道题。问题原文the distance between two ends are 10 meters. the two ends are open (什么意思?)。问题:不包括俩个半圆的,弓起的长方型的面积。大家考的时候可以留意ends。
[此贴子已经被作者于2006-11-23 18:25:44编辑过] |