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Question: ODESteps gives improper op or subscript selector

Question:ODESteps gives improper op or subscript selector

nm 10738 Maple 2024
ode step-by-step differential-equations student
September 26 2024
2

Why Maple gives

           improper op or subscript selector

On this ode? I was not expecting to see steps for this, but was just trying to see what it will show.

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restart;
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interface(version);

`Standard Worksheet Interface, Maple 2024.1, Windows 10, June 25 2024 Build ID 1835466`

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Physics:-Version();

`The "Physics Updates" version in the MapleCloud is 1810 and is the same as the version installed in this computer, created 2024, September 18, 18:16 hours Pacific Time.`

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libname;

"C:\Users\Owner\maple\toolbox\2024\Physics Updates\lib", "C:\Program Files\Maple 2024\lib"

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restart;
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ode:=sin(x)*diff(y(x),x$2)+cos(x)*diff(y(x),x)+(sin(x)-cos(x))*y(x)=0;

sin(x)*(diff(diff(y(x), x), x))+cos(x)*(diff(y(x), x))+(sin(x)-cos(x))*y(x) = 0

> 

dsolve(ode);

y(x) = c__1*(tan((1/2)*x)+I)^(1/2+(1/2)*(5-4*I)^(1/2))*(tan((1/2)*x)-I)^((1/2)*(5+4*I+(5+4*I)^(1/2))/(5+4*I)^(1/2))*HeunG(2, 2*(((3/4)*(5-4*I)^(1/2)+7/4-I)*(5+4*I)^(1/2)+5/4+I+(5/4+I)*(5-4*I)^(1/2))/(5+4*I)^(1/2), 1+(1/2)*(10+2*41^(1/2))^(1/2), (1/2)*((5+4*I)^(1/2)*(5-4*I)^(1/2)+5+4*I+2*(5+4*I)^(1/2))/(5+4*I)^(1/2), 1+(5-4*I)^(1/2), 1, 1-I*tan((1/2)*x))+c__2*(tan((1/2)*x)+I)^(1/2-(1/2)*(5-4*I)^(1/2))*(tan((1/2)*x)-I)^((1/2)*(5+4*I+(5+4*I)^(1/2))/(5+4*I)^(1/2))*HeunG(2, -2*(((3/4)*(5-4*I)^(1/2)+(-7/4+I))*(5+4*I)^(1/2)+(-5/4-I)+(5/4+I)*(5-4*I)^(1/2))/(5+4*I)^(1/2), -(1/2)*(5-4*I)^(1/2)+1+(1/2)*(5+4*I)^(1/2), (1/2)*(-(5+4*I)^(1/2)*(5-4*I)^(1/2)+5+4*I+2*(5+4*I)^(1/2))/(5+4*I)^(1/2), 1-(5-4*I)^(1/2), 1, 1-I*tan((1/2)*x))

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Student:-ODEs:-ODESteps(ode)

Error, (in Student:-ODEs:-OdeSolveOrder2) improper op or subscript selector

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