Answer 4 has two fixed points (1, 0) and (-1/2, -3/2). The original title is y = 2mx2+(1-m) x-1-m = (2x2-x-65433). That is, 2x2-x- 1=0, x= 1 or x =- 1/2 are respectively brought into the original equation, y. .................

Wrong answer 3. When m < 0, the symmetry axis of the quadratic function is x =-b/2a =1/4-(1/4) m, so the symmetry axis is on the right side of x= 1/4. At this time, if X > 1/4, the relationship between the increase and decrease of y and x cannot be determined.

Answer 2: The length of the X axis of the image interception is | X 1-x2 | = √ˇ (x1+x2) 2-4X 1X2 (under the square root symbol, the square of the sum of x1and x2 minus x1x2). There is no way to input the radical number, so we have to make do with it), where X 1+X2=-b/a, x1x2 = c/a. Bring in the eigenvalue 2m, 1-m,-1-m, and simplify it: | x/kloc. ); In fact, it can't be said that 2 is wrong but incomplete, but it should be wrong as a multiple-choice question.

The answer 1 is not explained, you know, m=-3 is brought in. . . . Besides, I don't know what you two are talking about.

Well, can you tell me why I can't type it? How to type it out?