If FX = e ^ / LNX / - / X-1 / X /, then the approximate image of y = f (x + 1) is As long as it's FX, how to draw the image

If FX = e ^ / LNX / - / X-1 / X /, then the approximate image of y = f (x + 1) is As long as it's FX, how to draw the image

When e ^ / LNX / appears, it means that x is the true number of logarithm, so x must be greater than 0
E ^ / LNX / = x (when x > e);
E ^ / LNX / = - x, (when 0

The volume of the balloon is 620m3. What is the buoyancy of the balloon on the ground? The temperature is 0 ℃, the pressure is 100000, and the air density is 1.29kg/m3

Buoyancy in air is similar to buoyancy in liquid
Formula: F floating = ρ air GV row
So: the buoyancy of the balloon near the ground is: F floating = ρ air GV row = 1.29kg/m ^ 3 × 10N / kg × 620 m ^ 3 = 7998n

The front view and left view of a space geometry are equilateral triangles with side length 1, and the top view is a circle

∵ the front view and the left view of the geometry are equilateral triangles with side length of 1, the top view is a circle, ∵ the geometry should be a cone, and the radius of the bottom circle is 12, the length of the generatrix is 1, ∵ the height of the cone is 32, so the side area is 12 × π × 1 = π 2, and the volume is 13 π× (12) 2 × 32 = 312 π

Let the area of the triangle formed by the tangent of the curve y = 2x ^ 3 at the point (a, 2A ^ 3) and the straight line x = a, y = 0 be 1 / 3, and then calculate a

Find the derivative of Y, get k = 6A ^ 2, so the tangent equation is y = 6 (a ^ 2) * x-4a ^ 3, the focus of tangent and X axis is (2A / 3,0)
So the area of the triangle surrounded by three straight lines is (a-2a / 3) * (2a ^ 3) / 2 = 1 / 3
The solution is a = 1 or - 1

c10.c15.c20.c25.c30

What do you want to ask? It's too abstract
1. C10-c15 is used for foundation cushion;
2. C20 for floor, plain concrete;
3. C25 is used in multi-storey reinforced concrete structure;
4. C30-c35 is mostly used in small high-rise reinforced concrete structures;
5. C40 above multi-purpose high-rise reinforced concrete structure
Water cement ratio price? Or god horse?

Solution equation: x ^ 2-6x-6-x √ x ^ 2-2x-2 = 0
Under the root sign is x ^ 2-2x-2

x^2-6x-6=x√(x^2-2x-2)
Square on both sides
x^4+36x^2+36-12x^3-12x^2+72x=x^4-2x^3-2x^2
5x^3-13x^2-36x-18=0
5x^3+5x^2-18x^2-36x-18=0
5x^2(x+1)-18(x+1)^2=0
(x+1)(5x^2-18x-18)=0
x=-1,x=(9±3√19)/5
The test shows that x = (9 + 3 √ 19) / 5 is root increasing
So X1 = - 1, X2 = (9-3 √ 19) / 5

1 μ M =? M, 0.00025 μ M =? M, 0.3 μ M =? M
fast

10^(-6)
2.5*10^(-10)
3*10^(-7)

What is the relationship between density, mass and volume?

Mass = Volume X density

Given (a + 100) = 2009, find (a + 101) (a + 99)

(a+101)(a+99) =(a+100+1)(a+100-1) =(a+100)^2-1^2 =2009^2-1 =2009*2009-1 =4036080

The standard equation of parabola with vertex at origin and focus (0, - 1 / 8) is?

Because the focus is (0, - 1 / 8), the opening is downward, P