About Lesson
(1)
Find the domain of x
R such that the following statements are meaningful
在x
R,求使下列各式有意义的定义域。
Find the domain of x
![Rendered by QuickLaTeX.com \epsilon](https://learn-ondemand.com/wp-content/ql-cache/quicklatex.com-0bd890136d8c87f18b3538e47d49f83b_l3.png)
在x
![Rendered by QuickLaTeX.com \epsilon](https://learn-ondemand.com/wp-content/ql-cache/quicklatex.com-0bd890136d8c87f18b3538e47d49f83b_l3.png)
(a)
(b)
(c)
(d)
![Rendered by QuickLaTeX.com \sqrt{x^2+1}](https://learn-ondemand.com/wp-content/ql-cache/quicklatex.com-c839ad2948e754d4c40ce8773a4bf859_l3.png)
(e)
(f)
Answer 答案 :
(a)
*** QuickLaTeX cannot compile formula: \xle1 *** Error message: Undefined control sequence \xle. leading text: $\xle
(b)
(c)
(d)
(e)
*** QuickLaTeX cannot compile formula: \xle-1, x\geq1 *** Error message: Undefined control sequence \xle. leading text: $\xle
(f)
(2)
Calculate 计算
Calculate 计算
(a)
(b)
(c) | Hint配方法
(d)
(e)
Answer 答案 :
(a)
(b)
(c)
(d)
(e)