今天买了TI-30x,比BA II plus pro便宜多了,又恰巧碰上打折,运气不错。于是急忙学了这个计算器的使用。找到一个材料,大家可以忽略与本考试无关的内容,然后就可以较快读完这本教材100多页。
tea guide.pdf
(3.47 MB)
Guo的评价是这个计算器做一般的计算更快。我基本同意他/她的判断。但是解方程还是不方便。见官方的解方程的方法。估计是mathematica, maple用多了,所以觉得这些都不方便。我看计算器统计部分的时候,不禁想为啥不用SAS呢。呵呵,太幼稚的想法了。
来自
http://epsstore.ti.com/OA_HTML/csksxvm.jsp?nSetId=81534
Example: Solve 2X^2+5X +3=0:
- Store the value of coefficients of the expression to memory variables
- Store 2 to A - Input 2 and press [STO>] [MEMVAR] [=]
- Store 5 to B - Input 5, press [STO>] [MEMVAR] using right cursor scroll to B, and press [=]
- Store 3 to C - Input 3, press [STO>] [MEMVAR] using right cursor scroll to C, and press [=]
Now, solve the expression using the quadratic formula:
- Press [(] [(-)] [MEMVAR]
- Use the right cursor to scroll to B and press [=]
- Press [+] then [2nd] [square root] and [MEMVAR]
- Use the right cursor to scroll to B and press [=] [X2]
- Press [-], input 4 and press [MEMVAR] [=]
- Press [MEMVAR] again and use
- the right cursor scroll to C, and press [=]
- Press [)] [)] [÷]
- Press [(], input 2 and press [MEMVAR] [=] [)]
- Press [=] again for the result
The screen should display -1.
To find the other value for the expression, use these set of instructions and replace [+] with the [-] (minus) key.