英文数学题？英文的导数数学题的意思是 1、假设曲线y=f^(-1)(x)在（4,7）处的斜率为4/5，求f'(y)2、如果f(x)=x³+x+1，求(f^(-1))'(3)的值 题一 解：因y=f^(-1)(x)=g(x)是 x=f(y) 的反函数，所以 dx/dy=f'(y)=1/g'(x)=1/(4/5)=5/4 题二 解：根据题意，那么，英文数学题？一起来了解一下吧。
两个题目都是基于函数及其逆函数的导数互为倒数
1） 这个题目时无法求得f'(y)的，只能求得f'(y)在y=7处的值，根据原函数和逆函数导数互为倒数知道，该值为5/4
2） 显然当x=1时f(x)=3
而f'(x)=3x^2+1， f'(1)=4, 所以逆函数在y=3处导数为1/4
The little red and jack Bauer and mutually leave home and do, little red every minute walk 52 meters per minute, jack Bauer walked 70 meters, two people in A place of meeting. If the little red four minutes in advance, and the speed of the same, jack Bauer every minute walked 90 meters, the two people who still in A place to meet, little red and jack Bauer home how many meters apart?
小红和小强同时从家里出发相向而行,小红每分钟走52米,小强每分钟走70米,两人在途中的A处相遇.若小红提前4分钟出发,且速度不变,小强每分钟走90米,则两人仍在A处相遇,小红和小强的家相距多少米?
A: are 1464 meters apart
With the second yuan A equation set, A place with little red house apart X m, little red house and jack Bauer home Y m, are: 1. X = (Y divided by 52-X) divided by 70, 2. (52)-4 X divided by = = (Y-X) divided by 90 reduction can get: 122 X = 52 Y, 142 X-52 Y = 18720 solution binary A equation can get: X = 624, Y = 1464
答： 相距1464米
用二元一次方程解，设A处与小红家相距X米，小红家和小强家相距Y米，可得：1. X除以52=（Y-X）除以70，2. （X除以52） -4==（Y-X）除以90化简可得：122X=52Y， 142X-52Y=18720解二元一次方程可得：X=624，Y=1464
A b two people at the same time from the runway at and do it, after six minutes, two people to meet according to walk, four minutes after the start point b a return to the starting point and 300 m distance, and the runway.
甲乙两人同时从跑道相向而行，经过6分钟相遇，两人据需走，4分钟后甲回到了起点，乙距离起点还有300米，求跑道全长。
1、In 2004, 16 June falls on a Wednesday. On what day of the week will 16 June fall in 2010?
2、 In a magic square the sum of the numbers in each row, in each diagonal and in each column are equal.In this magic square the value of x is:
3、If half of a number is 30, then three-quarters of that number is____.
4、The sum of the digits of the following product
999×555
5、Three positive integers have a sum of 28. The greatest possible product that these integers can have is_____.
6、Jack was trying to tessellate regular pentagons. He managed the
following figure.
The size of angle .a. is______.
7、If the area of the shaded region of the regular hexagon in the diagram
below is 36 cm2, the area of the whole hexagon in cm2 is_____.
8、In what follows, □ and Δ are different numbers.
When 503 is divided by □ the remainder is 20.
When 503 is divided by Δ the remainder is 20.
When 493 is divided by □ x Δ the remainder is_____.
9、A lady, her brother, her son and her daughter (all related by birth) played
volleyball.The worst player's twin (who is one of the four players) and the
bestplayer are of opposite ***.
The worst player and the best player are of the same age.
Who cannot be the worst player(s)?
A) brother only B) daughter only
C) son and daughter only D) lady and daughter only
E) lady only
10、If you continue the given number pattern, in what row and in what
position in that row will the number 320 be?
1 -------------- row 1
2 3 -------------- row 2
4 5 6 -------------- row 3
7 8 9 10 -------------- row 4
The answers are given in the order of row ; position.
参考答案：
1、Wednesday2、123、454、27（求数位上上的数字之和）5、28=9+9+10，因此答案为8106、36度7、1088、503-20=483483=3×7×23＝21×23，因此□ x Δ＝483，因此此题余数是10.9、D10、25，20
英语数学题
1、An ant covers a distance of 90 metres in 3 hours. The average speed of the ant in decimetres per minute is____.
2、
3、In a certain town some people were affected by a ’flu’ epidemic. In the first month 20% of the population contracted the flu whilst 80% were healthy.
In the following month 20% of the sick people recovered and 20% of the healthy people contracted the disease.
What fraction of the population is healthy at the end of the second month?
4、Mpho, Barry, Sipho, Erica and Fatima are sitting on a park bench.
Mpho is not sitting on the far right. Barry is not sitting on the far left.
Sipho is not sitting at either end. Erica is sitting to the right of Barry,
but not necessarily next to him. Fatima is not sitting next to Sipho.
Sipho is not sitting next to Barry.
Who is sitting at the far right?
5、Of the 28 T–shirts in a drawer, six are red, five are blue, and the rest are white. If Bob selects T–shirts at random whilst packing for a holiday, what is the least number he must remove from the drawer to be sure that he has three T–shirts of the same colour?
6、In an alien language, jalez borg farn means “good maths skills”. Nurf klar borg means “maths in harmony” and darko klar farn means “good in gold”.
What is “harmony gold” in this language?
7、Five children, Amelia, Bongani, Charles, Devine and Edwina, were in the
classroom when one of them broke a window. The teacher asked each of them to make a statement about the event, knowing that three of them always lie and two always tell the truth. Their statements were as follows:
Amelia: “Charles did not break it, nor did Devine.”
Bongani: “I didn’t break it, nor did Devine.”
Charles: “I didn’t break it, but Edwina did.”
Devine: “Amelia or Edwina broke it.”
Edwina: “Charles broke it.”
Who broke the window?
8、Did you know? A palindrome is a number which reads the same forwards as backwards e.g. 35453. Next year 2002 is an example of a palindromic number. What is the difference between 2002 and the number of the previous palindromic year?
9、If a Åb = (3×b) then the value of 2+(2×a) Å(3 Å5) is____. 10、Two ants start at point A and walk at the same pace. One ant walks around a 3 cm by 3 cm square whilst the other walks around a 6 cm by 3 cm
rectangle. What is the minimum distance, in centimetres, any one must
cover before they meet again?
参考答案：
1、 单位换算，注意单词，90×10÷（3×60）＝5
2、 46
3、 0.68
4、 Erica
5、 抽屉原则 7
6、 注意一一对应，borg= maths, farn=good, jalez=skills. Klar=in, Nurf=harmony, darko=gold. 答案是Nurf darko.
7、 Charles
8、 1001
9、 67
10、 108
1、Did you know? In the decimal number system (base 10) ten different digits, 0 to 9, are used to write all the numbers. In the binary number system (base 2) two different digits are used, i.e. 0 and 1.
Which one of the following numbers is not a valid number in the
octal number system (base 8)?
A) 128 B) 127 C) 126 D) 125 E) 124
2、The number of diagonals that can be drawn in a regular polygon with
twenty sides (icosagon) is_____.
3、If a and b are integers, 10ÄÄand then 379Ä6 is equal to_____.
4、Two numbers are in the ratio 2 : 3. When 4 is added to each number the ratio changes to 5 : 7.The sum of the two original numbers is____.
5、The greatest number of Mondays which can occur in 45 consecutive
days is____
6、Saul plays a video game in which he scores 4 for a hit and lost 6 for a miss. After 20 rounds his score is 30. The number of times he has missed is____.
7、Three girls A, B and C run in a 100 m race. When A finishes, B is 10 m
behind A and when B finishes C is 20 m behind B. How far in metres was C from A when A finished?(Let’s assume all the athletes run at a constant speed)
8、The areas of the faces of a rectangulabox are 84 cm2 , 70 cm2and 30 cm2.The volume of the box in cm3is____.
9、You have 3 weights: 1 kg, 3 kg and 9 kg as well as an equal arm balance, as shown. How many different weight objects can you weigh with these three?
[Remember the weights may be placed on either side]
参考答案：
1、A 考察我们学过的简单的进制问题，显然8进制中没有8出现
2、170 找规律，公式为n×（n-3）÷2
3、1 定义新运算，就是求379÷6的余数。
本有比杰克2倍多四张的CD，如果他们一共有31张CD，问：杰克有多少张CD?
答：设杰克有X张CD，则本有(2X+4)张CD。
则有：X+2X+4=31 解得x=9
那么杰克有CD:2*9+4=22（张）
1)Mary got 50 marks in the first Chinese dictation . If her mark in the second Chinese dictation increased by 20%
and her mark in the third Chinese dictation was 20% more than the second dictation
find her mark of the third Chinese dictation. Her second dictation mark is 50 * (1 + 20%) = 50 * 1.2 = 60 Her third dictation mark is 60 * (1 + 20%) = 60 * 1.2 = 72 2)The electricity bill of Mary's family on August was $560. If in the next o consecutive months
the use of electricity is less than each previous month by 15%
find the electricity bill of Mary's family in October.(give the wer correct to the nearest integer.) The electricity bill of Mary's family in September = $560 * (1 – 15%) = $560 * 0.85 = $476 The electricity bill of Mary's family in October = $476 * (1 – 15%) = $476 * 0.85 = $405 (correct to the nearest integer) 3)Last month
there were 30 male students and 20 female students in the chess class. The number of male students decreases by r % and the number of female students increases by r % in this month. If the number of male and female students are the same in this month
find r. The number of male students = 30 * (1 – r%) The number of female students = 20 * (1 + r%) 30 * (1 – r%) = 20 * (1 + r%) 30 – 0.3r = 20 + 0.2r 30 – 20 = 0.2r + 0.3r 10 = 0.5r r = 10/0.5 r = 20 4)Express the angle that the minute hand of a clock makes in 10 minutes as a round angle. There are 60 minutes around the clock for the minute hand 10 minutes is 10/60 of a circle One plete circle = 360 degrees The angle that the minute hand of a clock makes in 10 minutes = 360 degree * (1/6) = 60 degrees 5)A ribbon 176 cm long is used to wrap around a cubic t box. Find the length of one side of the t box. Let one side of the t box be x cm Wrapping around a cubic t box requires four times of the length of one side 4x = 176 x = 44 The length of one side of the t box = 44cm
以上就是英文数学题的全部内容，原题是：The ratio of blue marbles to green marbles in a bag is 2 to 5. there are 25 green marbles. How many marbles in which color would you have to add to make the ratio 1 to 3?题意如下：在一个袋子里面，蓝色的弹珠和绿色的弹珠的比例为2：5，绿色的弹珠有25个。内容来源于互联网，信息真伪需自行辨别。如有侵权请联系删除。
