Solve the inequality about x 1 m x 2 2m x m 3 0, where m R.

Updated on educate 2024-08-06
12 answers
  1. Anonymous users2024-02-15

    1) When m=1, it can be reduced to 2x-4>0, and the inequality is solved as x>2;

    2) When m≠1, =4m -4(1-m)[-m+3)]=4(3-2m).

    1-m>0 and <0, the inequality is solved as any real number, at which point m<1 and m>, but such m does not exist;

    When 1-m>0 and =0, y=(1-m)x 2+2mx-(m+3) has only one intersection point with the x-axis, and the original inequality has a solution, but such m does not exist;

    1-m>0 and >0, m<1 and m<, that is, m<1 y=(1-m) x 2+2mx-(m+3) has two intersections with the x-axis, and the original inequality is solved.

    x>[-m+ (3-2m)] (1-m) or x<[-m- (3-2m)] (1-m);

    1-m<0 and 0, that is, there is no solution to the original inequality at m;

    1-m<0 and >0, i.e., 1[-m+ (3-2m)] (1-m) or x<[-m- (3-2m)] (1-m);

    When m=1, the inequality is solved as x>2;

    When 1 is m, the original inequality has no solution.

  2. Anonymous users2024-02-14

    The discriminant formula of the quadratic equation of 1-m) x 2+2mx-(m+3)=0 = (2m) 2+4(1-m)(m+3)=12-8m

    When 12-8m<0 is m>3 2, (1-m) <0, then (1-m) x 2+2mx-(m+3) is always less than 0, and the equation has no solution.

    When 12-8m>=0, that is, m<=3, 2 is divided into three cases.

    1-m)<0 1[-m+root(3-2m)] (1-m)x>21-m)>0 m<1 =>x>[-m+root(3-2m)] (1-m) or x<[-m-root(3-2m)] (1-m).

  3. Anonymous users2024-02-13

    The solution of inequality $(m-2) x 2-2(m-2)x-1>0$ depends on the value of the parameter m. In order to solve for this inequality, we need to first determine the range of m.

    First, let's simplify the inequality:

    m-2)x^2-2(m-2)x-1>0$

    x^2-2x-\frac>0$

    This is a quadratic inequality, so we need to find its root first:

    x=\frac}}$

    In order for the inequality to have a solution, we need to make sure that $ sqrt}$ is a real number where the root number is opened.

    This requires $4+ frac>0$, which is $m>2$.

    So, when $m>2$, the inequality $(m-2)x 2-2(m-2)x-1>0$ is solved.

    Next, we need to determine the solution of the inequality:

    x=\frac}}$

    This is a pair of inequality roots, and we need to determine the position of these two roots in the unequal finch bridge state:

    x= frac}} $If $ frac}}>0$, then the solution of the inequality is $(0,+ infty)$; Otherwise, the solution of the inequality is $(frac}},infty)$.

    x= frac}} $If $ frac}}>0$, then the eclipse inequality is enormous. Hope.

  4. Anonymous users2024-02-12

    x^2-(3m+1)x+2m^2+m>0

    x-m)[x-(2m+1)]>0

    The two zeros are m and 2m+1

    So it's better than laughing jujube grinding than their size rock tease.

    m> bumper 2m+1, m0, x+1 is not equal to 0

    In summary. m-1,x 2m+1

  5. Anonymous users2024-02-11

    About x's bumper is unequal to the finch noisy slippery (m+3) x 2+2mx+m-2>0,

    m=-3 becomes -6x-5>0, and x-3 4=m 2-(m+3)(m-2)=-m+6,3

  6. Anonymous users2024-02-10

    Inequality 1 3(x-m) is greater than 2-m and the solution set is that x limb is at 2, then the value of m is ———

    1 3 (x-m) is greater than 2-m

    1/3)x-(1/3)m>2-m

    1 Hunger grinding wide bucket 3) x > 2-(2 3) m

    x>6-2m

    x>26-2m=2m=2

  7. Anonymous users2024-02-09

    When the m trace is matched with 2

    m (1-m) Zibi refers to (m-2).

    When m 2m (1-m) (m-2).

    When m=2 there is no solution.

  8. Anonymous users2024-02-08

    , it is easy to get x>1;

    When it is not equal to -3, [(m+3)x-m](x-1)>0, x1=m (m+3)=1-3 (m+3), x2=1,a) m (-3,-2), m+3>0 and x1<0x2, so x (1,m (m+3));

    In summary, m<-3, x (1, m (m+3)); m=-3, x>1;-3< m<-2, x (negative infinity, m (m+3)) and (1, positive infinity).

  9. Anonymous users2024-02-07

    Extract m separately to yield: m 3x (x-1).

    Because m r and m <-2

    So 0 (3x-2)(x-1).

    The answer can be calculated.

  10. Anonymous users2024-02-06

    ((m+3)x-m)(x-1)>0

    31, x>m (m+3) or x<1m=-3 is primitively 3x-3>0 then x>1

    m<-3 does it give m (m+3).

  11. Anonymous users2024-02-05

    Using the cross multiplication method, the quadratic trinomial formula is first decomposed, and then the m is classified and discussed.

    m+3)x²+(m+2)x-1>0

    m+3)x-1](x+1)>0

    1) m+3=0, m=-3.

    The solution of the inequality is, x<-1

    2) m+3<0 and 1 (m+3)<-1,-4-1,m<-4.

    The inequality is solved as x<-1 or x>1 (m+3)(5)m+3>0 and 1 (m+3)<-1, which does not exist.

    6) m+3>0 and 1 (m+3)>-1, m>-3.

    The solution of the inequality is x<-1 or x>1 (m+3).

  12. Anonymous users2024-02-04

    Divide the situation and collapse:

    -2<0, established, x sedan clan r

    No=>0, the opening is up, as long as >0, go to the middle part.

    4m 2-4m 2*(-2)=12m2 constant "0.".The solution of m 2 x 2 + 2 mx-2 = 0 two roots, x1, x2, is denoted by m.

    So. x1

Related questions
15 answers2024-08-06

Solving inequalities|x+2|-|2x-1|≥1

Solution: x+2 -2 x-1 2 1 >>>More

16 answers2024-08-06

I don't know that people born in 97 have already done this kind of question, dare to ask if the world can still be saved? Hehe. >>>More

12 answers2024-08-06

x<-3 2, -3x-2>-2x-3, get x<1, and hold at the same time, so x<-3 2. >>>More

10 answers2024-08-06

The answers are: a>1, in the range of (1 a,1);

When a=1, there is no range less than 0; >>>More

15 answers2024-08-06

Let f(x) = 2x +mx+8, axis of symmetry x= -m 4, and f(x) 0 when x (1,2). >>>More