2. The simplest common denominator of the square of x-x-12 is x + 2, the square of x-6x + 8 is x + 3, the square of X + X-6 is x + 4

2. The simplest common denominator of the square of x-x-12 is x + 2, the square of x-6x + 8 is x + 3, the square of X + X-6 is x + 4

Look at all denominators: the square of X - X-12 = (x-4) (x + 3) the square of X - 6x + 8 = (x-4) (X-2) the square of X + X-6 = (x + 3) (X-2) so the simplest common denominator = (X-2) (x-4) (x + 3)

Given that function f (x) is equal to the square key of x minus 2aX plus 1, if function f (x) has monotonicity in (1,3), the value range of real number a can be obtained

f(x)=x²-2ax+1
Axis of symmetry x = a
It can be seen from the question
A ≤ 1 or a ≥ 3

Why is y squared equal to x a function
One X corresponds to two ys, which does not conform to the definition of "every x has a unique y correspondence"?

In middle school mathematics, such as:
Y & # 178; = x is not a function expression, but an equation;
It is called implicit function in higher mathematics