Lopez

[匿名]

回覆: 1

2015-09-23 11:46 am

y'=(x+y)^2 若要用變數分離的方法的話 要怎麼解啊？

[匿名]

回覆: 1

2015-09-21 10:36 pm

Limit problem Velocity. Suppose that while waiting for a big wave, a surfer is being propelled toward the beach?

[匿名]

回覆: 1

2015-09-21 9:13 pm

If you have a random sample of 5 numbers, how do you find the sample variance?

[匿名]

回覆: 1

2015-09-20 10:34 am

M1數學 (easy) 設x=(1/t^3) - 3e^(2t) 而y=(4/t^3) + e^(-3t) 如果dy/dx=4 而t不=0 求t?

[匿名]

回覆: 1

2015-09-19 7:38 am

In the right triangle ABC shown to the right the length of AB,BC, and BE are 20, 15, and 6, what is the length of DE?

[匿名]

回覆: 1

2015-09-20 9:06 am

Help with c) please. My answer for b is (3,-2) and (18,8). Thank you?

[匿名]

回覆: 1

2015-09-19 3:28 am

Can someone explain to me how this math answer is right?

[匿名]

回覆: 1

2015-09-19 4:16 am

Is this proper notation for a solution?

[匿名]

回覆: 2

2015-09-19 5:23 am

知xyz≠0，xy=12(x＋y )，yz= ( y＋z )， ，xz=2 (x＋z )，求x＋y＋z?

Bid

回覆: 1

2015-09-18 4:45 am

急 ! F5 統計學數1題唔識做 ?

Bid

回覆: 1

2015-09-18 4:14 am

急! F6 統計學問題1條 ?

[匿名]

回覆: 1

2015-09-18 7:09 am

對數問題 求最大值?

[匿名]

回覆: 1

2015-09-17 12:36 pm

中五變分應用題 印刷某本書的單位成本($C)一部分固定不變，而另一部分則隨印刷該書的數量(n)而反變。當印刷100本時，單位成本是$12 ; 當印刷400本時，單位成本是$10.5。 試以n表示C。?

[匿名]

回覆: 1

2015-09-17 12:33 pm

中五變分應用題 一高模型的高及重量分別是x cm 及 y g。已知y是兩部分的和，一部分隨x正變，另一部分隨x^2正變。當x = 11時，y = 880 ; 且當x = 12時，y = 1044。?

[匿名]

回覆: 1

2015-09-17 12:26 pm

題目如下：以excel公式計算得 LN（a/b)得到計算結果-0.529 已知b=0.6，則a為何，如何以excel求得?

[匿名]

回覆: 1

2015-09-17 4:00 am

A volunteer for a local an shelter is in charge of buying supplies.?

[匿名]

回覆: 1

2015-09-17 3:06 am

Math question need help?

[匿名]

回覆: 1

2015-09-16 2:15 am

ind an equation for the parabola that has its vertex at the origin and satisfies the given condition. focus F = (0,-1/2)?

[匿名]

回覆: 1

2015-09-16 8:39 am

丟一個不均勻銅板，出現正面的機率為2/3，出現反面的機率為1/3，現丟此銅板 5 次，求恰在第 6 次，出現第 3 次正面的機率?

[匿名]

回覆: 1

2015-09-15 7:40 am

find the volume of the solid generated by revolving the region enclosed by the triangle with vertices (3,0) (3,4) and (5,4) about the y axis?

[匿名]

回覆: 2

2015-09-15 6:34 am

Help with propositional logic?

[匿名]

回覆: 3

2015-09-14 12:45 pm

find the complex numbers z and w in form of x +yi which satisfy the equation system (1+i)z-iw+i= iz+(1-i)w-3i =6?

[匿名]

回覆: 4

2015-09-14 9:56 am

if arg [(z-2)/(z-6i)]=π /2, show that x^2+y^2-2x-6y=0 2. z=2-√3i, find the real value of q such as arg(z^2+qz)=-π /3?

[匿名]

回覆: 1

2015-09-11 3:17 pm

62013年4月上海爆發H7N9禽流感 https://www.flickr.com/photos/101292575@N06/20677405414/in/dateposted-public/?

特威夥伴

回覆: 1

2015-09-13 7:22 am

數列A為項數是104的等差數列且級數和是2015;數列B為項數是104的等比數列且級數和是520;兩數列的順序乘積和(如同向量內積)為20000;求兩數列的逆序乘積和?

[匿名]

回覆: 1

2015-09-12 5:45 am

數學問題 一正方型邊長為8 求三角形面積(付圖) 已知一腳渡為45度 底邊長為6 http://i.imgur.com/Yj38aBM.jpg?

[匿名]

回覆: 1

2015-09-12 1:53 am

國中模凝考 1題求解?

[匿名]

回覆: 2

2015-09-09 5:45 pm

Solve the following differential equation {d^2 Y/dt^2 + 4Y (t)=0 {Y(0)=1 Y'(0)=0 They're in the same bracket Detailed answers please?

[匿名]

回覆: 1

2015-09-09 9:26 am

maths.... permutation and combination...?

[匿名]

回覆: 1

2015-09-09 10:14 am

maths... binary operations...?

[匿名]

回覆: 1

2015-09-08 6:13 pm

有無人知道呢個係咩?

[匿名]

回覆: 1

2015-09-08 2:58 pm

maths probability?

[匿名]

回覆: 2

2015-09-08 10:12 am

maths.....limit?

[匿名]

回覆: 2

2015-09-08 6:38 am

求解y=2.41是怎麼算出來的?

[匿名]

回覆: 1

2015-09-07 4:43 pm

Can someone show me how to solve this limit problem step by step? I can't figure out the algebra...?

[匿名]

回覆: 2

2015-09-07 4:45 pm

If a,x,y,z,b are in Harmonic progression,, can 1/x be equal to (3/4a)+(1/4b)?If yes,how?

[匿名]

回覆: 3

2015-09-07 8:34 am

Leibniz Rule for Differentiation of Integrals - Natural Logarithm...?

[匿名]

回覆: 1

2015-09-06 4:53 pm

Calculus question?

[匿名]

回覆: 2

2015-09-06 4:04 pm

請問我這樣算之後呢？還是我有算錯？如果有算錯請教我整題的算式？謝謝！?

[匿名]

回覆: 1

2015-09-06 3:32 pm

28某量販店的3C用品都按成本 https://www.flickr.com/photos/101292575@N06/20546519894/in/dateposted-public/?

[匿名]

回覆: 1

2015-09-06 3:29 pm

25已知11-7超商規定購物每滿80 https://www.flickr.com/photos/101292575@N06/20546519894/in/dateposted-public/?

[匿名]

回覆: 1

2015-09-06 5:40 am

Let a1,a2,a3..., a10 be in arithmetic progression and h1,h2,h3,..., h10 be in harmonic progression.If a1=h1=2 and a10=h10=3,then a4*h7=?

[匿名]

回覆: 1

2015-09-06 6:21 am

Trigo Question help!?

[匿名]

回覆: 1

2015-09-04 9:43 am

if the areas of three adjacent faces of a rectangle are in the ratio 2:3:4 and its volume is 9000 cm^3 what is the dimensions of the rectangle.?

[匿名]

回覆: 1

2015-09-03 4:02 pm

Find the volume and surface area of the composite figure. Give your answer in terms of π.?

[匿名]

回覆: 1

2015-09-03 2:14 pm

Calculus III - Vectors Help?

[匿名]

回覆: 1

2015-09-03 12:25 pm

ABCD is any quadrilateral, P and Q are the midpoints of the diagonals AC & BD. M is the midpoint of PQ. If O is any point, prove that...?

[匿名]

回覆: 2

2015-09-03 9:11 am

Can you help me to resolve this inequality?

[匿名]

回覆: 1

2015-09-02 1:50 pm

How do you integrate this?

[匿名]

回覆: 1

2015-09-02 2:06 am

Pre-Calc question about domain?