TK

Lets say I have the following matlab code for illustration:

n = 0;

For w = 1:5

For x = w + 1:6

For y = x + 1:7

For z = y + 1:8

n = n + 1;

A(n,:) = [w x y z];

End

End

End

End

The result of A will produce sort of like a combinatorial matrix with 8C4 or 70 rows. By having this matrix, we can see that for any given row number n, we can refer to the matrix and obtain the values w,x,y,z for that row.

The problem is, if given a random row number between 1 to 70, can we find the values of w,x,y,z for that particular row without referring to the matrix? Meaning is there a formula or method that is able to input row number,n, and outputs values w,x,y,z?

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Extended Problems

The previous solution must be able to accommodate changes in the code.

An extension to this problem would be:

1) The solution must be able to cope if more variables/for-loops are added.

2) The solution must be able to cope if the limits for each variable changes, EG: 5,6,7,8 becomes 57,58,59,60

One condition is set, that is, the limits must always be consecutive with increments of one. For example in the code, w-5, x-6, y-7, z-8, are consecutive with increments of one.

I have a problem understanding the classification of standard and non standard basis. The question is:

x = V*a = [ -1 1 ] [ -1 ] = [ 5 ]

...............[ 1 1 ]. [ 4 ] ... [ 3 ]

Match the properties of x = V*a

End of question.

We are given 4 choices to classify each sub question:

a) standard basis

b) non-standard basis

c) coordinate vector in standard basis

d) coordinate vector in non standard basis

* Ignore all full stops only, they're there for easier viewing

The subquestions are as follows:

1)

[ -1 ] , [ 1 ]

[ 1 ] .. [ 1 ]

2)

[ 5 ]

[ 3 ]

3)

[ 1 ] , [ 0 ]

[ 0 ] . [ 1 ]

4)

5i + 4j

5)

- [ -1 ] + 4 [ 1 ]

. [ 1 ] ...... [ 1 ]

6)

[ -1 ]

[ 4 ]

Match a choice with a subquestion. Some explanation would be appreciated. Thanks.

I have a E5300 processor with fsb 200mhz. My 2gb pc6400 ram is installed but only running a dram frequency of 333.4mhz. My question is since my ram is able to support 400mhz, why doesn't my pc just use a fsb:dram ratio of 1:2 = 200:400, but instead uses 3:5 = 200:333.4? I assuming that therefore i'm not using my rams full potential.

This question has 2 parts, but I can't solve the 2nd part.

a) Use implicit differentiation to find the derivative in ellipse equation 8x²+4xy+5y²=36

b) The ellipse in part A is centered at the origin and as a consequence its axis lines will have equations of the form y = mx. Now use the fact that the axes of an ellipse are perpendicular to its tangents at intersection, to find the equations of the axes of 8x²+4xy+5y²=36.

Please give your interpretation for the part B, tnx.

Eg: 3.0 Liter Engline

Doing some research, I found out its the volume of the combustion cylinder multiply by the number of cylinders.

But does it mean that it burns 3 Liters intake of fuel? which is kinda awkward. Also, does the performance/millage increases by having a larger cylinder, or a smaller one.

Is there any reliable software to convert .mkv files to DVD with minimum loss of quality? The last 1 i tried ultimate mkv converter gave really bad quality. Cheers

Differentiate 3x² (2x-5)^4

I've seen pictures of many galaxy's, but always wondered why is the middle of almost every galaxy the brightest? Does the largest star sits there? or is it caused by lights from a billion stars. And is there a presence of a black hole in the middle of our galaxy?

2^x - 2^(x-1) = 4

Help me solve it please, take note of the spaces, i use spaces to prevent using too many brackets.

h(x) = 2+5x

gh(x) = x/2 + 1

g(x) = ?

Thanks

AP Question.

The 18th term is twice its 9th term. Find the ratio of the sum of the first 18 terms to the sum of the first 9 terms.

Thanks

A point P moves along the arc of a circle with centre B(3.2). The arc passes through point C(6,0) and D(t,4).

1) Find equation of locus at point P.

2) Find the values of t.

Help show me the steps for this question please.

The tangent to a curve y = x(sq) - 4 at the point where x = a intersects the x-axis and the y-axis at points P and Q respectively.

Show that the area of triangle OPQ, where O is the origin is

[a(sq) + 4 ](sq) / 4a.

Thanks

I'm a computer veteran, however I have little knowledge about networking. I have this wireless router (Aztech DSL-600EW) which is currently connected to my pc via ethernet. But now I want to connect my Mac G4 to my router to access the internet via wireless. But the problem is I do not know which or what item to buy that can be attached to my Mac G4 to allow wireless access.

I know about the differences about 802.11x but does it have anything to do with the item i'm going to buy or is in incorporated in my modem? Please help me understand and tell me what I should be looking for.

Thanks.

I recently downloaded their new release of AVG 8.0 free and tried to install it. However, when it was in the installing phase, an error occured and a list of registries is the problem, can someone please shed light on this?

Text file containing error

http://www.freewebs.com/sforsuper/AVG%208.0%20Inst...

I uploaded this picture onto wikipedia, however it says that I lack of some licensing or something. Can anyone provide step-by-step of what to do. Thanks in advanced.

http://en.wikipedia.org/wiki/Image:SMKBUD4.jpg

I got a problem with my monitor. First it all started when 1 day my LCD Monitor (Dell e173fp) died with a spark sound when I was using it. So I send it to repair, after I receive it back, my monitor doesn't show the actual color anymore. I tested it, played around with the color settings on both my monitor and pc, but the problem still exist. I found that that I have a problem with the grey color. Anything that is grey, it is replaced with a slight violet colour, the darker the grey is, the more violet it goes. I surfed the web for those color block tests and verified that between white and black, violet replace it, the darker the more intensive the violet gets. I even tested my pc with another monitor and verified it's the monitor's problem, including changing the wire plugs, tightening the plug, resetting back to factory settings. Hopefully that's enough information.

PS : I accidentally left the monitor in the car for a few days because I was busy, hope that didn't cause the problem.

I'm thinking of burning several videos into 1 dvd with a menu. I have around 8-9 videos per dvd. But when I use Nero, it's bit-rate is too high for me, and it takes too much space that I can only insert 6-7 videos. I need an alternative software that can allow me to burn them at a lower bit-rate.. around 1000kbps or lower. Or a software which allows me to convert to a lower bit rate in VOB format would be much preferred.