- x2+y
- x2+xy+y2
- x2+y+1
- x3+xy
No category found.
- All real numbers
- All real numbers except 0
- All positive real numbers
- All negative real numbers
- xx+1?
- x?3×2?9?
- x+1?
- 5x
- 3, 4, 2005
- 2, 3, 10
- 1, 2, 30
- 4, 5, 2003
- ax+b=0
- ax2+bx+c=0
- ax3+bx2+cx+d=0
- y=mx+c
- n2
- n(n+1)
- 2n(n+1)?
- n(n?1)
- Zero matrix
- Identity matrix
- Scalar matrix
- Diagonal matrix
