Hi, Very new to Maple. This is a math assignment, and well I am not exactly sure what is happening. I have had a buddy to help me, but things are not necessarily working. Using Maple17.

This is what I have so far.

de := sin(x)*(diff(y(x), x))+cos(x)*y(x) = Q;

/ d \

sin(x) |--- y(x)| + cos(x) y(x) = Q

\ dx /

dsolve(de);

Q x + _C1

y(x) = ---------

sin(x)

ab := 75; Q := 2-0.1e-1*ab; M := 4+0.1e-1*ab;

75

1.25

4.75

PS := simplify(dsolve({de, y((1/2)*Pi) = M}, y(x)));

-10 x - 38 + 5 Pi

y(x) = - -----------------

8 sin(x)

z := rhs(PS);

-10 x - 38 + 5 Pi

- -----------------

8 sin(x)

N := evalf(subs(x = .4, z));

8.439521805

a := z, x = 0 .. Pi, y = 0 .. 10; b := plots[pointplot]([(1/2)*Pi, M]); c := plots[pointplot]([.4, N]); d := plots[pointplot]([x0, y0]); plots[display]({a, b, c, d});

z, x = 0 .. Pi, y = 0 .. 10

Error, (in plots:-pointplot) points cannot be converted to floating-point values

Error, (in plots:-pointplot) points cannot be converted to floating-point values

Error, (in plots:-pointplot) points cannot be converted to floating-point values

Error, (in plots:-display) expecting plot structures but received: {c, d, z, plots:-pointplot, x = 0 .. Pi, y = 0 .. 10}