I have to write a program that takes a plain text; that characters are represented on 5 bits. My information vector is of the form W=[a,b,c,d]. the sent vector is of the form C=[x,y,a,z,b,c,d] where x,y,z are parity check elements. I don't know how to get my W

Hey everybody,

I have what seems to me like it should be an incredibly easy question.

In Maple I have a function u(t). What I need to do now is determine the value of t at which u(t) is equal to some already-known value. It seems like it ought to be incredibly easy to do, but I really have no clue how to do this.

Any help would be greatly appreciated!

 

I have Maple 13 that I got with my student license, I am thinking of re-formating my computer, Win7. Do I need to de-authorize Maple first? or what do I do?

how can I write a code in Maple that will take a primitive irreductible polynomial and will output the tables F4, F8, F9 and F16. this is done using Zech's logarithms

 

Hi,

PredictorEstimator := diff(X(t), t) = A.X(t)+B.U+L.(Y-C.X(t)-D.U)

If I want to collect the X(t) in the above non-communative equation, which maple command should I use?

Regards

 

I created two Maple animations in Maple 13 using the command "animate", which I then call with "display". The application works wonderfully. Now I am trying to create a Maplet around this program, and am having trouble finding any information or examples in the Help menu on how to create play buttons and whatever else is needed to successfully make this work. If you could give me some guidance or point me to an example somewhere that would be greatly appreciated.

hello could u help me with this error printf(cat(`$`(`%12.5 f`, 4)), `$`(vij(1, 1)[k], k = 1 .. 4)) Error, (in fprintf) unknown format code ` ` THANKS

r''-r(phi'^2+sin(phi)^2 theta'^2) -e^-r^2 = 0

Do you have any idea how to solve that ode?

I tried the following:

q:=(x)^(2)=a;
assume(0<x,0<a);
solve(q,x);
 

and received two solutions, though I assumed x and a to be positive.

Why? And what can I do, to make Maple account for my assumptions and only return the one possible solution?

I think, it's a simple trouble, but I can't solute it. Help me, please restart; > PDE:=diff(T(x,t),t)=5.71*10^(-6)*diff(T(x,t),x,x); > BC:={T(0,t)=500*(1-t/1200)^10+1000,T(x,0)=1500}; > SOL:=pdsolve(PDE,BC,numeric,timestep=50, spacestep=1/200); > SOL:-plot3d(x=0..0.25,t=0..1200); Error, (in pdsolve/numeric/par_hyp) must specify time variable using 'time=varname' Error, `SOL` does not evaluate to a module

I was doing a procedure for my programming class that classifies triangles.

I got the error "invalid terms in product"

I was wondering if anyone knew what that error means? I emailed my professor but he hasn't emailed me back.

 

Thanks,

Lex

hello,everyone,who can introduce the use of "free motion" component?

Hello, everyone.

Here is a simple question.

How can I solve an equation containing a logarithmic function, for example:
eq:={40=53802.8616296/V-4421522.681759509154376431238971030890884/V^2-34696412.12593013477367899170424836286055/V^3-68770455564.45999796126160810938763183857/V^4+403332559275.4141930212434442368214769780/V^5+958128028485.0130104382506076504882209562/V^6-26140204752481.13476652750626233649550628/V^7+17375263330.60863159106251286006887257238*ln(V)/V^4,1258*0.9<V<1258*1.1}