Suppose a = true, B = false, C = true, d = true, the value of the logical expression a ∧ B ∨ C ∧ D is () Why?

The above expression can be analyzed in the following way. First of all, we must understand that∧has higher priority than∨
Step one: (a ∧ b) ∨ C ∧ d to get false ∨ C ∧ D
Step 2: false ∨ true (C ∧ d)
Step 3: the answer is true

Let a = true, B = false, C = true, d = false, the following logical expression value is true ()
A.(A∧B))∨(C∧D∨┓A)
B.((┓A∧B)∨C)∧┓D
C.(B∨C∨D)∧D∧A
D.A∧(D∨┓C)∧B

Let a random variable X have a probability density FX (x) = {8 / x, 0

It's hard to understand your method. There's something wrong with the title
The random variable x has probability density FX (x) = {X / 8,0

How to solve ternary linear equations with MATLAB?
For example, the equations are as follows:
x+y+z=1
x+2y+z=2
z+y-z=0
How to use matlab to solve the root of equations?

s=solve('x+y+z=1','x+2*y+z=2','x+y-z=0','x,y,z');
result=[s.x,s.y,s.z]

What number minus 6, plus 6, divided by 6, multiplied by 6 or equal to 6

For a parallelogram, if the base increases by 3 cm and the height remains unchanged, the area increases by 12 square meters; if the height increases by 2 cm and the base remains unchanged, the area increases by 36 square meters

If the bottom is increased by 3 cm and the height remains unchanged, the area will be increased by 12 square meters
So the height is 12 / 3 = 4cm
If the height increases by 2 cm and the bottom remains unchanged, the area increases by 36%
The bottom is 36 △ 2 = 18 cm
The original area is 4x18 = 72

1. If the vertex of the image of the quadratic function y = x2-2x + C is on the X axis, then C is equal to ()
5. If one side of two angles is on the same line and the other side is parallel to each other, then the relationship between the two angles is (d)
A. Equal B. complementary C. equal or complementary D. equal and complementary
6. It is known that ∠ AOB = 30 ° and OC is introduced from the vertex o of ∠ AOB. If ∠ AOC: ∠ AOB = 4:3, then ∠ BOC is equal to ()
A. 10 ° b.40 ° c.70 ° d.10 ° or 70 ° C
7. The solution of equation 2 x2 + x = 0 is ()
A．x1 = 0 x 2=12 B． x1 = 0 x 2=－2
C． x = － 12 D． x1 = 0 x 2 =－12
8. If the solution set of inequality system is x >, then the value range is (c)
A． ≥3 B． =3 C． >3 D．

1、c=1
5、A
6\D
7\X=2

Square of X + 6x + 4 = 0
Using formula method

Square of X + 6x + 4 = 0
Square of X + 6x + 9-5 = 0
Square of (x + 3) = positive and negative root 5
X = minus 3 plus root 5, minus 3 minus root 5

As shown in the figure, the area of a right triangle is 50 square centimeters. How many square centimeters is the area of the circle where the triangle is located?

3.14 × 50 × 2, = 3.14 × 100, = 314 (cm2) answer: the area of triangle circle is 314 square centimeter

It is known that a (x1, Y1) B (X2, Y2) is two points on the branch of hyperbola y = K / X in the first quadrant, connecting OA and ob

The AE ⊥ X axis and BF ⊥ X axis are made by crossing points a and B respectively, and the perpendicular feet are e and f respectively
In the right triangle OEA, OA is the hypotenuse, so AE

Suppose a = true, B = false, C = true, d = true, the value of the logical expression a ∧ B ∨ C ∧ D is () Why?