## 375 Reputation

6 years, 196 days

## Conversion of barycentric coordinates in...

Maple

How to convert barycentric coordinates to cartesian ? Thank you

## Difficulty with Transpose...

Maple 2021

with(geometry);
with(LinearAlgebra);
xA := 1;
yA := 0;
xB := 0;
yB := 0;
xC := 0;
yC := 1;
Mat := Matrix(3, 3, [xA, xB, xC, yA, yB, yC, 1, 1, 1]);
Miv := MatrixInverse(Mat);
phi := (x, y) -> Transpose(Multiphy(Miv), <x, y, 1>);
for i to 6 do
B || i := phi(xA || i, yA || i);
end do;
Error, (in LinearAlgebra:-Transpose) invalid input: too many and/or wrong type of arguments passed to LinearAlgebra:-Transpose; first unused argument is Vector(3, {(1) = xA1, (2) = yA1, (3) = 1})
How to correct this error ? Thank you.

## I cannot solve this problem of drawing...

Maple 2021

point(A, xA, yA);
point(B, xB, yB);
point(C, xC, yC):
L3 := linestyle = 3
triangle(Tr, [A, B, C])
line(AP, [A, P]);
line(BP, [B, P]);
line(CP, [C, P]);
dr := draw([Tr(t3), AP(cbl, L3), BP(cbl, L3), CP(cbl, L3)]),
textplot([[coordinates(A)[], "A"], [coordinates(B)[], "B"], [coordinates(C)[], "C"]], align = {above, right});
display({dr, ellip}, scaling = constrained, axes = none, view = [-1 .. 14, -1 .. 11]);
Why doesn’t Maple show me the expected effect ? Thank you.

## Probleme with factor...

Maple 2021

condi := [p1 + p2 + p3 = 1];
simplify(s, condi);
condi := [p1 + p2 + p3 = 1]

/      c (-1 + p1 + p2)        c (-1 + p1 + p2)
{ a = - ----------------, b = - ----------------,           c = c,
\             p1                               p2

c (p1 + p2) (-1 + p1 + p2)           c (p2 - 1)          c (p1 - 1)
d = --------------------------,             e = ----------, f = ----------
p1 p2                                       p1                 p2

\
}
/

assigne(%);
c := 10;
a := factor(simplify(a, condi));
b := factor(simplify(b, condi));
d := factor(simplify(d, condi));
e := factor(simplify(e, condi));
f := factor(simplify(f, condi));
c := 10

a := a

b := b

d := d

e := e

f := f

NULL;
Why "factor" does not play its role ?   Thank you.

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