How to read pear in English?

How to read pear in English?

Original English text:
pear
British phonetic alphabet:
[peə]
American Phonetic Alphabet:
[pɛr]

How to read pear English

English: [P & # 603; &# 601;] American: [P & # 603; R]
Noun n. [C]
1. Pear
2. Pear tree

How to use matlab to draw the curve of y = exp (- 0.2 * x) * sin (0.5 * x) in the interval [0,2 * PI] to rotate around the X axis to form a surface

x = 0:.1:2*pi;
y = exp(-0.2*x).*sin(0.5*x);
[zz,yy,xx] = cylinder(y);
xx = xx*2*pi;
surf(xx,yy,zz)

Write a two-way division according to the multiplication formula 18x 8 / 9 equals 16

Hanying warm for you
18×8/9=16
Two division formula
16÷18=8/9
16÷8/9=18
(or click "satisfied" in the upper right corner of the client)
It's my driving force!
If you don't understand,
Until the completion of understand this problem!

Draw a rectangle in the picture (the side length of each grid is 1cm) so that the circumference of the rectangle is 12cm and the ratio of length to width is 2:1

The sum of length and width is: 12 △ 2 = 6 (CM), width is: 6 △ 2 (2 + 1) = 2 (CM), length is: 2 × 2 = 4 (CM)

How to change the general form of quadratic function into vertex form

Take this question as an example
Y=X^2+6X+4
=(X^2+6X+3^2-3^2+4)
=(X+3)^2-5
The vertex is (- 3, - 5)

If the solution of the equation 2x + a3 = 4x + B5 about X is not negative, then the relation between a and B is ()
A. a＞35bB. b≥35aC. 5a≥3bD. 5a=3b

Solving the equation about X, we get x = 5A − 3B2, ∵ the solution is not negative, ∵ 5A − 3B2 ≥ 0, we get 5A ≥ 3B; so the answer is C

The length of a rectangle is 5 cm. After the length and width are increased by 2 cm, the area will be increased by 20 square cm. What is the width of the original rectangle?

Let the width of the original rectangle be x cm
（x+2)(5+2)=20+5x
The solution is x = 3
Answer
come on.

If the intersection of y = 2x + 1 and y = 3x + B falls in the second quadrant, then the value range of B is?

Simultaneous two equations (using x = x, y = y, thus eliminating x to get y =?, eliminating y to get x =?), and the intersection point (1-B, 3-2b)
Because the intersection is in the second quadrant, its abscissa is less than zero and its ordinate is greater than zero,
So 1-b1, 3-2b > 0b

The derivation process of derivative f (x) = KX ^ 3 + 3 (k-1) x ^ 2-k ^ 2 + 1?

The derivative of F (x) = KX ^ 3 + 3 (k-1) x ^ 2-k ^ 2 + 1kx ^ 3 = 3kx ^ 2 (formula F (x) = x ^ A, then f '(x) = ax ^ (A-1)) 3 (k-1) x ^ 2 = 6 (k-1) x formula is the same as above, the derivative of K ^ 2 = k formula is the same as above, 1 is a constant term, then the derivative = 0 all add up is f (x) = 3kx ^ 2 + 6 (k-1) x-k