The function f (x) = the square of X (ax-3) defined on R, where a is a constant 1. If x = 1 is an extreme point of F (x), find the value of A The function f (x) = the square of X (ax-3) defined on R, where a is constant 1. If x = 1 is an extreme point of F (x), find the value of A. 2. Find the monotone interval of F (x) under the condition of 1

The function f (x) = the square of X (ax-3) defined on R, where a is a constant 1. If x = 1 is an extreme point of F (x), find the value of A The function f (x) = the square of X (ax-3) defined on R, where a is constant 1. If x = 1 is an extreme point of F (x), find the value of A. 2. Find the monotone interval of F (x) under the condition of 1

If f '(x) = 3ax & sup2; - 6x, then f' (1) = 0, a = 2. Then f '(x) = 6x (x-1), (- ∞, 0) increases, (0,1) decreases, (1, + ∞) increases

Who can help me out 2 math problems in grade one
A question about the combination of equation and geometry

1. If a store sells a certain color TV set at 20% of the price of each set, it can still make a profit of 20%. If it is known that the purchase price of a new brand color TV set is 1332 yuan, what is the price of this color TV set_____ 2. An individual vendor sells two coats at the same time in a single sale. Each coat is sold for 135 yuan. If calculated according to the cost price, one of them will make a profit of 25%, and the other one will make a profit of 25%

What is the general formula of 2,5,7,12,19,31
The answer I want is an =... N.. That is to use n to indicate the number of the nth item
I hope there will be a brief process
In fact, I'm a freshman. It's a problem in discrete structure, but it's very similar to the problem of high school sequence

Fibonacci formula constructs the characteristic equation x2-x-1 = 0 from an + 2 = an + 1 + an with an + 2-An + 1-an = 0, so that its two roots are p, Q has PQ = - 1, P + q = 1. Let's prove that {an + 1-pan} is an equal ratio sequence with Q as the common ratio

The formula for calculating the volume of a sphere is v = 43 π R3 (V for volume, R for radius), and the formula for calculating the mass of an object is m = VP (m for mass, V for volume of a sphere, P for density of an object). It is known that the mass of the earth is about 81 times that of the moon, and the ratio of the density of the earth to the density of the moon is about 8164. The ratio of the radius of the earth to the radius of the moon is estimated

∵ v = 43 π R3, M = VP, ∵ R3 = 34 π· MP, ∵ the mass of the earth is about 81 times the mass of the moon, the ratio of the density of the earth to the density of the moon is about 8164, ∵ the ratio of the radius cube of the earth to the moon is 81 × 6481 = 64, ∵ the ratio of the radius of the earth to the moon is 4

1. If you travel 30 kilometers per hour from home to the station, it's 15 minutes earlier than the driving time. If you travel 18 kilometers per hour, it's 15 minutes later than the driving time. Now you plan to arrive 10 minutes before the driving time, what's the speed of cycling?
2. When a ship sails between a and B, it takes 3 hours to go downstream, and 30 minutes more to go upstream than to go downstream. It is known that the speed of the ship in still water is 26 kilometers per hour, so it is necessary to calculate the current speed

1. Set the cycling time as X and the walking time as x + 0.5
30*X=18*（X+0.5）
X = 0.75 hours (45 minutes)
Distance S = 30 * 0.75 = 22.5km
Planned time (45 + 5 = 50 minutes): 50 / 60, speed: 22.5 / 50 / 60 = 27 km / h
2. Let the water velocity be X
（26+X）*3=（26-X）*3.5
X = 2, water velocity is 2km / h

Arrange the positive integers according to the rule shown in the figure, if the ordered real number pair (n, m) represents the nth row, and the number m from left to right, such as (4,2) represents 9,
The ordinal pair of 58 is
1 -------- first row
3.2 -- second row
4 5 6 -------- third row
10 9 8 7 -- the third row

（1+10）*10/2=55
So there are 55 numbers in row 10
So 58 is in the 11th row
You can see that the odd rows are in positive order
So the ordinal pair of 58 is (11,3)

If the absolute value is greater than 3 and less than 7, the sum of integers is

If the absolute value is greater than 3 and less than 7, the integer is - 4 - 5 - 6 4 5 6
-4 -5 -6 +4+ 5+ 6=0

Mathematics problems in grade one of junior high school (geometry)
Can you tell the difference between the following figures? (hint: compare the shape and quantity of the bottom and side)
1. Cylinder and prism
Similarities:
difference:
2. Cone and pyramid
Similarities:
difference:

1. The difference between a cylinder and a prism: the bottom of a cylinder is a circle, and the cross section is a circle. The bottom of a prism is a polygon, and the cross section is a polygon. The sides are paralleled quadrilaterals and paralleled edges. If the bottom is a few sides, it is called a few prisms. If the bottom is a triangle, it is called a three prism, and if it is a quadrilateral, it is called a four prism (that is, a cuboid). Wood is a common cylinder, Prism and cuboid are common prism
Common point: there are heights in three-dimensional space
All of them are cylinders. The general formula for calculating the volume of a cylinder can be used: volume = bottom area × height
2. The difference between a cone and a pyramid: one face of a pyramid is a polygon, and the other faces are triangles with a common vertex. A cone is surrounded by a circle at the bottom and a fan at the side
If the base area of a cone (pyramid, cone) is s and its height is h, then its volume is V cone = 1 / 3SH
If the base radius of a cone is R and its height is h, then its volume is V cone = 1 / 3 π r2h
The same thing: they are all cones, and the bottom face corresponds to a vertex

There are 46 beads and 10 boxes. Can you put them in the box separately, but the quantity of each box can't be the same. How to put them?
The second and fourth friends have the same idea as mine, but there must be a box that doesn't contain it. Can not meet the requirements of the title of "separately installed.". Is there any other way to install it? I hope my friends can help me a lot!

Cannot 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 = 55

How many centimeters is one foot?

According to the current measurement
One foot is ten feet
1 foot = 10 inches
1 foot = 33, 33 cm
There are also questions in this respect