Practice problem
Which of the following are true?
The graphs of x2+y2≤1x^2 + y^2 \le 1x2+y2≤1 and xy≥1xy \ge 1xy≥1 intersect.
The graphs of x2+y2≤1x^2 + y^2 \le 1x2+y2≤1 and xy≥1xy \ge 1xy≥1 do not intersect.
There are real numbers (x,y)(x,y)(x,y) such that x2+y2≤1x^2 + y^2 \le 1x2+y2≤1 and xy≥1xy \ge 1xy≥1.
There do not exist real numbers (x,y)(x,y)(x,y) such that x2+y2≤1x^2 + y^2 \le 1x2+y2≤1 and xy≥1xy \ge 1xy≥1.
Type a concept, like “slope” or “photosynthesis”.