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Question: question on RootOf

Question:question on RootOf

nm 8552 Maple 2020
December 25 2020
1

Maple gives solution to equation as RootOf when there is no explicit solution

restart;
eq:=x*sin(x*y)+y+1=0;
sol:=solve(eq,y)

The _Z above, is the variable we wanted to solve for, which is y in this example. My question is, why did not Maple give the solution as

sol2:=RootOf(x*sin(_Z*x)+_Z+1)

Which is a little simpler looking. Is the above not the same as what Maple gives?  I just replace y by _Z 

Digits:=100;
plot(evalf(sol-sol2),x=0..Pi)
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