💡 Examples:
• Second quadrant: x ≤ 0, y ≥ 0, z = 0
• Plane with conditions: x = -3, y ≥ 0, z = none
• Slab: Check "slab" for y, enter -1 and 1
• First octant: x ≥ 0, y ≥ 0, z ≥ 0
📐 Equation Help:
• Use x, y, z as variables
• Powers: x^2, y^3, z^(1/2)
• Operations: +, -, *, /, ^
• Functions: sqrt(), sin(), cos(), abs()
• Example: x^2 + y^2 + z^2 = 25