Current location - Training Enrollment Network - Mathematics courses - First of all, put forward the first problem of mathematics in the textbook and seek the detailed process. What are those two circles again?
First of all, put forward the first problem of mathematics in the textbook and seek the detailed process. What are those two circles again?
Two circles represent infinity, plus a minus sign represents infinitesimal, and represents infinity.
Then this problem is a quadratic equation with one variable,
The equation has two unequal real roots, namely δ > 0.