My code answers empty sym 0 by 1, except when the symbol equals zero.

I don't know why a majority of my code says, "Empty sym: 0-by-1", except when x equals zero. I don't know what's wrong.

syms x
y=(x^2)-(x/(x+3))

y = 

y0=solve(x,0)

y0 = 

0

y1=solve(x,1)

 
y1 =
 
Empty sym: 0-by-1
 

y2=solve(x,2)

 
y2 =
 
Empty sym: 0-by-1
 

y3=solve(x,3)

 
y3 =
 
Empty sym: 0-by-1
 

y4=solve(x,4)

 
y4 =
 
Empty sym: 0-by-1
 

y5=solve(x,5)

 
y5 =
 
Empty sym: 0-by-1
 

y6=solve(x,6)

 
y6 =
 
Empty sym: 0-by-1
 

y7=solve(x,7)

 
y7 =
 
Empty sym: 0-by-1
 

Answer 1

[Torsten]

I don't know what you mean by "solve(x,7)", e.g.

If you want to insert x = 7 in the expression for y, use

syms x
y=(x^2)-(x/(x+3))

y = 

subs(y,x,7)

ans = 

Answer 2

[Walter Roberson]

syms x
y1=solve(x,1)

 
y1 =
 
Empty sym: 0-by-1
 

That means to solve the system of simultaneous equations

x == 0

ans = 

1 == 0

ans = logical
   0

As it is impossible for 1 to equal 0, there cannot be a solution.

I suspect, by the way, that you want to solve y rather than x.

syms x
y=(x^2)-(x/(x+3))

y = 

solve(y, x)

ans = 

but possibly you want

subs(y, x, 0:7)

ans =