A (x-1) (x + 2) (x-3) > 0 solution inequality

There is no solution when a = 0
a> At 0, 1

Given inequality system: 2 / 3-x ＜ 0, X ＞ a solution set is x ＞ 2, then what is a?

If 2 / 3-x < 0, then x > 2 / 3 and x > A, and the solution set of the group x > 2
According to "take the big big" a = 2

As shown in the figure, in △ ABC, ∠ BAC = 50 ° D and E are on AB and AC respectively, DM vertically bisects AB, BC intersects m, en vertically bisects AC, CB intersects n, then the angle man=

If DM vertically bisects AB, BM = am, ∠ BAM = ABM;
Similarly, it can be proved that an = CN, ∠ can = ∠ ACN
∴∠MAN=(∠CAN+∠BAM)-∠BAC=(∠ACN+∠ABM)-∠BAC=130°-50°=80°.

How many kilograms is a kilogram

One kilogram is equal to 2 jin, 500 grams is one jin

If the image of function f (x) = a ^ (x-1) + 3 (a > 0, and a is not equal to 0) passes through the fixed point P, then the coordinates of point P are?

(1,4) that's the point
Because it is to pass a fixed point, the value must have nothing to do with a, so no matter how a changes, a ^ (x-1) is a fixed value, so X-1 must be 0. Because a > 0 and a is not equal to 0, when x = 1, a ^ 0 = 1, so f (x) = 4 = y

The radius of a circle increases ACM, and the circumference increases () cm

The radius of a circle increases ACM and the circumference increases (2a π) cm

How and why does the power factor of the circuit change when an inductive load is paralleled with a resistive load

The power factor will increase
The reason is: in numerical value, the power factor is the ratio of active power and apparent power. The power factor of resistance load is 1. Generally, the power factor of circuits with inductive load is less than 1. When resistance load is added to the circuit, the proportion of active power increases, so the power factor increases

Given the set a = {- 1,2}, B = {x | MX + 1 = 0}, if a ∪ B = a, then the value of real number M

mx+1=0
x=-1/m
A={-1,2}
A∪B=A
Then - 1 / M = - 1
m=1
Or - 1 / M = 2
m=-1/2
So: M = 1 or M = - 1 / 2

Given the line segment AB = 4cm, extend AB to C so that BC = half AB, extend AB to D in reverse so that ab: ad = 2:3, and calculate the length of line segment CD

The general form of N-matrix which is both upper triangular matrix and lower triangular matrix

Is a diagonal matrix, that is, all elements except the diagonal are 0

A (x-1) (x + 2) (x-3) > 0 solution inequality