1. Let x ＞ 0. =_________

7. 求sin的近似值,使其誤差小於10-5。 (10%)

8.求三重積分dxdydz =? (10%)

9.在一個半徑為「的球內,內接一圓柱體,求出此圓柱體之半徑為多少時,其體積為最大值。 (20%)

Part 4: Short essay writing 20% (本大題於答案卷作答)Write an essay of approximately 300 words in English. Give your essay a title, and include the following: a) how the different aspects of your life, e.g. life style, study, interpersonal relationship, etc. have changed because of COVID-19,and b) personal reflection from this experience.The maximum score for your essay is 20%. You receive 10 points for content, and another 10 for form such as vocabulary, grammar, sentence variety, and writing skills.Part 4: Short essay 

2. =_________

3. Find the slope of the line tangent to the graph y2 + x2 y = 3x2 at the point (2,2) :_________

4. Find =_________

5. Find the point on the graph of y = that is nearest the point (1,0):_________

6. Find the interval on which the function f(x) = x3 - 3x2 - 9x + 12 is decreasing:_________

7. =_________