If f (2 * x) is defined as [0,2], then f (log2 x) is defined as [0,2] If f (2 * x) is defined as [0,2], then f (log2 x) is defined as [0,2]

If f (2 * x) is defined as [0,2], then f (log2 x) is defined as [0,2] If f (2 * x) is defined as [0,2], then f (log2 x) is defined as [0,2]

Is 2 * x the x power of 2
0

Math 12 () 6 () 3 = 4 () 4

The first floor is wrong,
12 (minus) 6 (minus the square of the number) 3 = 4 (divided by) 4

Let the area of R T △ AOB be SK, then S1 + S2 + S3 + +S2010=______ ．

Let x = 0, y = 1K + 1, BK (0, 1K + 1), y = 0, x = 1K, AK (1K, 0), SK = 12.1k.1k + 1 = 12K (K + 1) = 12 (1K − 1K + 1), S1 + S2 + S3 + +S2010=12(11×2+12×3+… +12010×2011)=12(1−12+12−13+… +12010−12011)=12×(1−...

Dig a cylindrical reservoir with a bottom radius of 5 meters and a depth of 4 meters. How many cubic meters can this reservoir store?

3.14 × 52 × 4, = 3.14 × 25 × 4, = 3.14 × 100, = 314 cubic meters; answer: this reservoir can store 314 cubic meters

-3,4, - 6,10 are 24 points, and the three methods are satisfactory
Please answer the questions before 22:30 on September 24

-3×(-6)+10-4=24
10×[(-6)÷(-3)]+4=24
-(10+4-6)*(-3)=24

It is known that the cube of F {x} = x + the square of AX + 36x-24 has an extreme value at x = 2. Find the value of a and the increasing interval of the function
fast

f'(x)=3x²+2ax+36
If there is an extreme value at x = 2, then f '(2) = 0
a=-12
f'(x)=3x²-24x+36=3(x-2)(x-6)>0
x6
So increasing interval (- ∞, 2) ∪ (6, + ∞)

0.5 cubic meters = how many cubic decimeters = how many liters

0.5 cubic meter = 500 cubic decimeter = 500 liter

If a geometry is three views, the front view and side view are equilateral triangles with side length of 2, and the top view is a circle, then the volume of the geometry is?

Height = √ 3. Bottom radius = 1
Cone volume = (1 / 3) × π × 1 & # 178; ×√ 3 = √ 3 π / 3 ≈ 1.814 (volume unit)

If the parabola y = a times the square of (x + m) + K passes through (- 2,0), (4,0), then the axis of symmetry is a straight line
A X=0 B X=1 CX=2 D X=3

B
Small problems should be solved
The axis of symmetry is also the axis of symmetry at the intersection of the parabola and the x-axis
Directly find (- 2,0), (4,0) midpoint coordinates (1,0)
The axis of symmetry passes through the midpoint

When calculating the number of cubic meters of sand and stone in 1 cubic meter of concrete, is the density of sand and stone calculated by stacking or tight loading?
The amount of material per cubic meter has been used. Now I just want to know how many cubic meters of sand and stone are needed to mix one cubic meter of concrete. The algorithm for finding the exact point is that the gravel fed in the field is dry, and the moisture content of medium sand is about 5%

The mix proportion of concrete is calculated according to the density of formed concrete
For example, if the density of your concrete test block can reach 2.5t/m3, then the total weight of your concrete ingredient must reach 2.5t
When calculating how many cubic sand and stone are needed in one cubic concrete, the volume weight (not density) of sand and stone is calculated by accumulation