Apples and pears should be harvested in the right season

Apples and pears should be harvested in the right season

Apples and pears should be harvested in the right seasons.

May I have some pears

can I eat some pears?

You can eat apples or pears

You can eat apples,and you also can eat pears.
You can eat apples,and you can eat pears,too
I hope I can help you!

Two numbers 50 and 70 decompose the prime factor respectively___ Prime factors that make them common

10

The problem of indefinite integral of higher number: let arcsinx be a primitive function of F (x), then the indefinite integral ∫ XF '(x) DX =,

Because a primitive function arcsinx of F (x)
So ∫ f (x) DX = arcsinx + C
F (x) = (arcsinx) '= 1 / radical (1-x & sup2;)
∫ xf'(x)dx
= ∫ xd(f(x))
=xf(x) - ∫ f(x)dx
=xf(x) + arcsinx + C
=X / radical (1-x & sup2;) + arcsinx + C

The buoyancy of a wood block with a density of 0.4 × 103 kg / m3 and a volume of 0.5 decim3 immersed in water is______ Newton

When the block is immersed in water, the volume of boiled water: V row = v = 0.5dm3 = 5 × 10-4m3, the buoyancy of the block: F floating = ρ water GV row = 1 × 103kg / m3 × 10N / kg × 5 × 10-4m3 = 5N; so the answer is: 5

-How to calculate 3A ^ 2B / (- A ^ 2b)?

The sum of squares is greater than or equal to 0, and the sum is equal to 0
If one is greater than 0, then the other is less than 0
So both are equal to zero
So 3a-2b-3 = 0
a-3b-1=0
Solving equations
a=1,b=0

Find the tangent plane equation of surface 9 x ^ 2 + y ^ 2 - Z ^ 2 = 9 at point (1,1,1)

The partial derivative of surface: f'x (x, y, z) = 18xf'y (x, y, z) = 2yf'z (x, y, x) = - 2Z. The partial derivative at point (1,1,1) is: f'x (1,1,1) = 18f'y (1,1,1) = 2f'z (1,1,1) = - 2. The partial derivative is not zero at the same time. There is tangent plane. The equation is: 18 (x-1) + 2 (Y-1) - 2 (Z-1) = 0

What is equivalent substitution method? Please give some examples,

Equivalent substitution method: it is a physical method. It is not only a method for scientists to study problems, but also a method commonly used by students in learning physics. The new curriculum standard also requires students to master some physical methods to explore problems. For example: 1. In the study of resultant force, one force and two forces make the deformation of spring equivalent, one force replaces two forces

It is known that the sum of (a + C) x + 2bx - (C-A) = 0 is - 1, and the difference between the two is 1

x1+x2=-1
|x1-x2|=1
4x1x2=(x1+x2)^2-(x1-x2)^2=o
-2b/(a+c)=-1
-(c-a)/(a+c)=0
a=b=c
The equation can be reduced to x ^ 2 + x = 0
x1=0 x2=-1