I have read the doumentation on adding generic hints or feedback to a problem. However, what I would like to do is create adaptive hints that are triggered when a student enters a particular type of answer. I am primarily authoring Maple-graded and Mathematical Formula type questions.

Can I do this in the Grading Code? Could someone illustrate this with an example? 

I'm doing this interactive component and for coordinates of points I use one TextArea for each coordinate.

a:= Do(%CB);

x1:=Do (%x1);
y1:=Do (%y1);
x2:=Do (%x2);
y2:=Do (%y2);
x3:=Do (%x3);
y3:=Do (%y3);
x4:=Do (%x4);
y4:=Do (%y4);
x5:=Do (%x5);
y5:=Do (%y5);

#x6:=Do (%x6);
#y6:=Do (%y6);
#x7:=Do (%x7);
#y7:=Do (%y7);
#x8:=Do (%x8);
#y8:=Do (%y8);
#x9:=Do (%x9);
#y9:=Do (%y9);
#x10:=Do (%x10);
#y10:=Do (%y10);




vx2:=[x1,x2];
vy2:=[y1,y2];

vx3:=[x1,x2,x3];
vy3:=[y1,y2,y3];

vx4:=[x1,x2,x3,x4];
vy4:=[y1,y2,y3,y4];

vx5:=[x1,x2,x3,x4,x5];
vy5:=[y1,y2,y3,y4,y5];



if a=2 then F2:=y=LinearFit([1, x], vx2, vy2, x);
end if:

if a=3 then F3:=evalf[2](LinearFit([1, x], vx3, vy3, x));
end if:


if a=4 then F4:=LinearFit([1, x], vx4, vy4, x);
end if:


if a=5 then F5:=LinearFit([1, x], vx5, vy5, x);
end if:

I was browsing on maple and i sow this:

I would use a table to insert coordinates of point like this image, but i don't know how can I do.

Can you help me plese?

Thanks in advance
Enrico

Dear friends:

I am facing two problems

1. one is to get solution of the below system of ODE for L=100 (highlited as red) and

2. the other is I want the graph in the form of solid line not poit, asterisk etc.

restart; epsilon := .1; Pr := 1; beta := .1; Sc := 1; S := 1; L := 20;
for i from -L while i <= L do;
a[i] := 1.0*i/L;
end do;
for i2 from -L while i2 <= L do;

fw := a[i2]; 

Eq1[i2] := eval(diff(F(eta), eta, eta, eta)+F(eta)*(diff(F(eta), eta, eta))-(diff(F(eta), eta))^2+S*(epsilon-(diff(F(eta), eta)))+epsilon^2);
Eq2[i2] := eval((diff(G(eta), eta, eta))/Pr-G(eta)*(diff(F(eta), eta))+F(eta)*(diff(G(eta), eta))); 
Eq3[i2] := eval(diff(H(eta), eta, eta)+Sc*(F(eta)*(diff(H(eta), eta))-beta*H(eta)));
IC[i2] := F(0) = a[i2], (D(F))(0) = 1, (D(F))(L) = epsilon, G(0) = 1, G(L) = 0, H(0) = 1, H(L) = 0;
dsys1[i2] := {Eq1[i2], Eq2[i2], Eq3[i2], IC[i2]};
dsol1[i2] := dsolve(dsys1[i2], numeric, output = listprocedure, range = 0 .. L);
dsol1x[i2] := subs(dsol1[i2], diff(F(eta), eta, eta));
dsol1y[i2] := subs(dsol1[i2], G(eta));
dsol1z[i2] := subs(dsol1[i2], H(eta)) end do;

for j from -L while j <= L do; 
g[j] := eval(-dsol1x[j](0)) end do;
with(plots); 

g6 := pointplot({seq([n/L, g[n]], n = -L .. L)}, symbol = asterisk, symbolsize = 15, color = red);
display(g6);

Please see the problem and correct as soon as possible. I am waiting your positive respone.

Muhammad Usman

School of Mathematical Sciences 
Peking University, Beijing, China

Hello! I try to make friends physics package and matrixes. But I am faced with difficulties. To be more specific, to consider a code:

with(Physics):
Setup(mathematicalnotation = true);
Coordinates(X);
Setup(tensors = A[mu](X));
PDEtools:-declare(A(X), p0(X), pm(X), pp(X), pt(X), U(X), m5(X))

And then I create a matrix:

pt := proc (X) options operator, arrow; Matrix(2, 2, [[p0(X), sqrt(2)*pp(X)], [sqrt(2)*pm(X), -p0(X)]]) end proc;

It displays as:

Why do p0, pp, pm become function only one variable x1?

Interestingly that maple understands the next matrix:

Nevertheless even for function only one variable derivative works fine:

And I can construct more complicated functions:

But why is only one variable?

Hi

When I try this maple retuurns FAIL and does not evaluate the expression.

is(seq(tm[i] < (1/6)*Diameter[rør][i], i = 1 .. 17));

tm is numbers in mm and diameter is also numbers in mm

Diameter[rør] := [273.05*Unit('mm'), 219.08*Unit('mm'), 168.28*Unit('mm'), 114.3*Unit('mm'), 273.05*Unit('mm'), 219.08*Unit('mm'), 1066.8*Unit('mm'), 60.33*Unit('mm'), 219.08*Unit('mm'), 168.28*Unit('mm'), 168.28*Unit('mm'), 141.3*Unit('mm'), 168.28*Unit('mm'), 114.3*Unit('mm'), 114.3*Unit('mm'), 168.28*Unit('mm'), 168.28*Unit('mm')]

tm := 8.982892831*Unit('mm'), 4.189790007*Unit('mm'), 3.913902969*Unit('mm'), 3.620745836*Unit('mm'), 4.482892831*Unit('mm'), 4.189790007*Unit('mm'), 8.793627806*Unit('mm'), 3.327643012*Unit('mm'), 4.189790007*Unit('mm'), 3.913902969*Unit('mm'), 3.913902969*Unit('mm'), 3.767378711*Unit('mm'), 3.913902969*Unit('mm'), 3.620745836*Unit('mm'), 3.620745836*Unit('mm'), 3.913902969*Unit('mm'), 3.913902969*Unit('mm')

please help me with this thank you

Edited.

Fellas

I'm wondering how to produce the graphic in the

https://en.wikipedia.org/wiki/Lazy_caterer's_sequence.

my attempt:
caterers.mw

Hi all,

I've an implicit equation f(x,y,z)=0 resulting in a PLOT3D containing ISOSURFACE structure.

p := plots:-implicitplot3d(f,....)

As stated in docs an ISOSURFACE type of plots can't be exported.

So, question is, has anyone an idea on how to write a file containing points (xyz) from my plot p? Or any other way to export the computed points?

Thanks and regards

JiPé

I will try to explain with an example, lets say i have to solve 2 equations with 2 unknowns

P := solve({3*y+x, 2*x+3+y})

I would then like to do P[1] and P[2] to get the values, but instead it gives me "x=-9/5" which make me unable to use it for things like

P[1] + P[2]

Hope you all understand, and thanks for taking your time to read my problem 

It is well known that fsolve usually increases (internally) Digits in order to obtain the desired accuracy.

But in the following example, it seems that fsolve highly exaggerates :-)   

restart;
N:=40:
Digits:=100:
F:=expand(mul(x-k,k=1..N)):
f:=evalf(F):
S:=[fsolve(f,complex)];

Error, (in fsolve) Digits cannot exceed 38654705646

Note that the bug does not appear if e.g. F:=expand(mul(x-k-I, k=1..N)):

Hi, I'd like to know if is it possible to import questions from Maple TA into Maple and use them in quizes, for example. Your help will be highly appreciated. Thank you.

i have these commands:

restart;
with(plots);
with(VectorCalculus);
with(LinearAlgebra);
f := A-B+x^y/y;

g := x^y-y;
Solve({f = 0, g = 0}, {x, y});
              / /                     y    \         \
              | | y                  x     |         |
         Solve|< x  - y = 0, A - B + -- = 0 >, {x, y}|
              | |                    y     |         |
              \ \                          /         /

but I can't get it to actually solve the equations. what do I do  ?

Hello. I have a problem with DEplot and I hope someone could help me with this:

How I can solve it for P?

P=i^(2)r+(&DifferentialD;)/(&DifferentialD; t) (1/(2)l(tetha)i^(2))+1/(2)i^(2)(&DifferentialD;l(tetha))/(&DifferentialD; theta) w

attach i(t) "corrente", l(t) "induttanza", theta "angular", w "rotary speed"graph of funtions

thanks

How to pdeplot Curl(A(x,y,z))=0 in maple

it has A1(x,y,z) , A2(x,y,z) and A3(x,y,z)

Hello everyone,

I am trying to create a custom component to find the minimum between 3 values.

I know that in Maple it is done by:

l := [5, 2, 3];
min(l[1], l[2], l[3]);

However I could not do the same with a custom component. I provided a screenshot below, where h(1), h(2), and h(3) are my input values and min(h1,h2,h3) is my output.

Thanks in advance,

Canberk