It is known that the intercept of the line on the y-axis is - 2, and the area of the triangle surrounded by the two coordinate axes is 3

It is known that the intercept of the line on the y-axis is - 2, and the area of the triangle surrounded by the two coordinate axes is 3

The intercept on the Y axis is - 2, and the area of the triangle enclosed by the two axes is 3
Then the intercept on the X axis is - 3 or 3
The analytical formula of this line is as follows:
y/(-2)+x/3=1
y/(-2)-x/3=1
|3/1-2/1|+|4/1-3/1|+|5/1-4/1|+… +|10/1-9/1|
(-8 7/3)+(7.5)+(-21-7/4)+（+3 2/1）
X / X means a fraction, ||means absolute value, and - 8 7 / 3 means minus 8 and 3 / 7. It's due tomorrow. You can write the process or not
I always feel wrong Can you be more specific
On the division rule of the same base power
A ^ m △ a ^ n = a ^ (m-n) (a ≠ 0, m, n is a positive integer, M > n) why m > n?
Hello, in junior high school, M > n is required, and m, n is a positive integer
When m is smaller than N, M-N is negative,
You haven't learned a ^ (- M) (the law of negative exponential power of a)
After high school
m. The range of M is extended to all real numbers
That is, a ^ m △ a ^ n = a ^ (m-n) (m, n are all real numbers)
m. The size relation of n is arbitrary
It is known that the area of the triangle formed by the moving line L and the positive half axis of the two coordinate axes is p, and the sum of the intercept of the line L on the two coordinate axes is Q, and P is 1 larger than Q,
Then the minimum area of the triangle is?
The answer is: 5 + 2 √ 6
Detailed process! Urgent. Thank you
Let l be x / A + Y / b = 1
1 / 2 * a * b = P
a+b=q
p-q=1
A * b = 2p, a + B = P-1
a+b>=2√（a*b）
So P-1 > = 2 √ (2P)
The solution of inequality about P is: P > = 5 + 2 √ 6
So the minimum area of this triangle is 5 + 2 √ 6
Give me 80 mixed operations of rational numbers in grade one
Just the formula
But the questions should not be too difficult or too troublesome
As long as 80 questions, don't do anything superfluous
The nature of division operation of the same base power is based on_______ .
M power of a △ n power of a = M-N power of a
Let's know the linear function y = 4 / 3 x - 8 / 3. Find the intercept of the line on the Y axis and the area of the triangle formed by the line and the coordinate axis
When Ji intercept is x = 0, the value of Y is - 8 / 3
As for the area of the triangle, it is the triangle formed by two points and the origin when x = 0 and y = 0
X = 0, y = - 8 / 3
y=0,x=2
So the area is 8 / 3 * 2 / 2 = 8 / 3
Intercept minus eight-thirds, eight-thirds area
The intercept of a line on the y-axis is - eight thirds
When x = 0, y = - 8 / 3; when y = 0, x = 2. Therefore, the lengths of the two sides of the triangle formed by the line and the coordinate axis are 2 and 8 / 3 respectively. S = 1 / 2 * 8 / 3 * 2 = 8 / 3!
80 mixed operations of rational numbers in the first year of junior high school (with answers)
1）-23÷1 ×（-1 ）2÷（1 ）2；
（2）-14-（2-0.5）× ×[( )2-( )3];
（3）-1 ×[1-3×(- )2]-( )2×(-2)3÷(- )3
（4）(0.12+0.32) ÷ [-22+(-3)2-3 × ];
(5)-6.24×32+31.2×(-2)3+(-0.51) ×624.
[-|98|+76+(-87)]*23[56+(-75)-(7)]-(8+4+3)
5+21*8/2-6-59
68/21-8-11*8+61
-2/9-7/9-56
4.6-(-3/4+1.6-4-3/4)
1/2+3+5/6-7/12
[2/3-4-1/4*(-0.4)]/1/3+2
22+(-4)+(-2)+4*3
-2*8-8*1/2+8/1/8
(2/3+1/2)/(-1/12)*(-12)
(-28)/(-6+4)+(-1)
2/(-2)+0/7-(-8)*(-2)
(1/4-5/6+1/3+2/3)/1/2
18-6/(-3)*(-2)
(5+3/8*8/30/(-2)-3
(-84)/2*(-3)/(-6)
1/2*(-4/15)/2/3
-3x+2y-5x-7y
75÷〔138÷（100-54）〕 85×(95－1440÷24)
80400－(4300＋870÷15) 240×78÷（154-115）
1437×27＋27×563 〔75-（12+18）〕÷15
2160÷〔（83-79）×18〕 280＋840÷24×5
325÷13×(266－250) 85×(95－1440÷24)
58870÷(105＋20×2) 1437×27＋27×563
81432÷(13×52＋78) [37.85-（7.85+6.4）] ×30
156×[(17.7-7.2)÷3] （947－599）＋76×64
36×(913－276÷23) [192－（54＋38）]×67
[（7.1-5.6）×0.9-1.15]÷2.5 81432÷(13×52＋78)
5.4÷[2.6×（3.7-2.9）+0.62] （947－599）＋76×64 60－(9.5＋28.9)]÷0.18 2.881÷0.43－0.24×3.5 20×[(2.44－1.8)÷0.4＋0.15] 28-(3.4 1.25×2.4) 0.8×〔15.5-(3.21 5.79)〕 （31.8 3.2×4）÷5 194－64.8÷1.8×0.9 36.72÷4.25×9.9 3.416÷（0.016×35） 0.8×[(10－6.76)÷1.2]
（136+64）×（65-345÷23） (6.8-6.8×0.55)÷8.5
0.12× 4.8÷0.12×4.8 （58+37）÷（64-9×5）
812-700÷（9+31×11） （3.2×1.5+2.5）÷1.6
85+14×（14+208÷26） 120-36×4÷18+35
（284+16）×（512-8208÷18） 9.72×1.6-18.305÷7
4/7÷[1/3×（3/5-3/10）] （4/5+1/4）÷7/3+7/10
12.78－0÷（ 13.4＋156.6 ） 37.812-700÷（9+31×11） （136+64）×（65-345÷23） 3.2×（1.5+2.5）÷1.6
85+14×（14+208÷26） （58+37）÷（64-9×5）
(6.8-6.8×0.55)÷8.5 （284+16）×（512-8208÷18）
0.12× 4.8÷0.12×4.8 （3.2×1.5+2.5）÷1.6
120-36×4÷18+35 10.15-10.75×0.4-5.7
5.8×（3.87-0.13）+4.2×3.74 347+45×2-4160÷52
32.52-（6+9.728÷3.2）×2.5 87（58+37）÷（64-9×5）
[（7.1-5.6）×0.9-1.15] ÷2.5 （3.2×1.5+2.5）÷1.6
5.4÷[2.6×（3.7-2.9）+0.62] 12×6÷（12-7.2）-6
3.2×6+（1.5+2.5）÷1.6 （3.2×1.5+2.5）÷1.6
5.8×（3.87-0.13）+4.2×3.74
33.02－（148.4－90.85）÷2.5
（1） Calculation questions:
(1)23+(-73)
(2)(-84)+(-49)
(3)7+(-2.04)
(4)4.23+(-7.57)
(5)(-7/3)+(-7/6)
(6)9/4+(-3/2)
(7)3.75+(2.25)+5/4
(8)-3.75+(+5/4)+(-1.5)
(9)(-17/4)+(-10/3)+(+13/3)+(11/3)
(10)(-1.8)+(+0.2)+(-1.7)+(0.1)+(+1.8)+(+1.4)
(11)(+1.3)-(+17/7)
(12)(-2)-(+2/3)
(13)|(-7.2)-(-6.3)+(1.1)|
(14)|(-5/4)-(-3/4)|-|1-5/4-|-3/4|)
(15)(-2/199)*(-7/6-3/2+8/3)
(16)4a)*(-3b)*(5c)*1/6
1.3/7 × 49/9 - 4/3
2.8/9 × 15/36 + 1/27
3.12× 5/6 – 2/9 ×3
4.8× 5/4 + 1/4
5.6÷ 3/8 – 3/8 ÷6
6.4/7 × 5/9 + 3/7 × 5/9
7.5/2 -（ 3/2 + 4/5 ）
8.7/8 + （ 1/8 + 1/9 ）
9.9 × 5/6 + 5/6
10.3/4 × 8/9 - 1/3
0.12χ＋1.8×0.9=7.2 (9－5χ)×0.3=1.02 6.4χ-χ=28+4.4
11.7 × 5/49 + 3/14
12.6 ×（ 1/2 + 2/3 ）
13.8 × 4/5 + 8 × 11/5
14.31 × 5/6 – 5/6
15.9/7 - （ 2/7 – 10/21 ）
16.5/9 × 18 – 14 × 2/7
17.4/5 × 25/16 + 2/3 × 3/4
18.14 × 8/7 – 5/6 × 12/15
19.17/32 – 3/4 × 9/24
20.3 × 2/9 + 1/3
21.5/7 × 3/25 + 3/7
22.3/14 ×× 2/3 + 1/6
23.1/5 × 2/3 + 5/6
24.9/22 + 1/11 ÷ 1/2
25.5/3 × 11/5 + 4/3
26.45 × 2/3 + 1/3 × 15
27.7/19 + 12/19 × 5/6
28.1/4 + 3/4 ÷ 2/3
29.8/7 × 21/16 + 1/2
30.101 × 1/5 – 1/5 × 21
31.50＋160÷40 （58+370）÷（64-45）
32.120-144÷18+35
33.347+45×2-4160÷52
34（58+37）÷（64-9×5）
35.95÷（64-45）
36.178-145÷5×6+42 420+580-64×21÷28
37.812-700÷（9+31×11） （136+64）×（65-345÷23）
38.85+14×（14+208÷26）
39.（284+16）×（512-8208÷18）
40.120-36×4÷18+35
41.（58+37）÷（64-9×5）
42.(6.8-6.8×0.55)÷8.5
43.0.12× 4.8÷0.12×4.8
44.（3.2×1.5+2.5）÷1.6 （2）3.2×（1.5+2.5）÷1.6
45.6-1.6÷4= 5.38+7.85-5.37=
46.7.2÷0.8-1.2×5= 6-1.19×3-0.43=
47.6.5×（4.8-1.2×4）= 0.68×1.9+0.32×1.9
48.10.15-10.75×0.4-5.7
49.5.8×（3.87-0.13）+4.2×3.74
50.32.52-（6+9.728÷3.2）×2.5
51.-5+58+13+90+78-(-56)+50
52.-7*2-57/(3
53.(-7)*2/(1/3)+79/(3+6/4）
54.123+456+789+98/(-4)
55.369/33-(-54-31/15.5)
56.39+{3x[42/2x(3x8)]}
57.9x8x7/5x(4+6)
58.11x22/(4+12/2)
59.94+(-60)/10
Division is the inverse of multiplication. Can we say that multiplication is the inverse of division?
In the field of mathematics, multiplication and division are reciprocal, so multiplication is also the inverse of division
The reason why we seldom hear this view is that we think that multiplication is a positive operation (learn multiplication first and then Division) in our life. We usually use multiplication (extended from addition) to explain the meaning of division. Therefore, we will have the illusion that division is a subsidiary of multiplication
tolerable. Division and multiplication are reciprocal operations.
Division is the inverse of multiplication. Is multiplication the inverse of division? Let a be a nonempty set. For any two elements of a, B, a, B, a, B, a, B, a, B, B, a, B, B, B, B, B, a, B, B, B, B, B, a, B, B, B, B, B, B, B, B, B, B, B, B, B,
Why not stipulate that 0 can not be used as a multiplier, but that zero can not be used as a divisor? If 0 is not allowed to be a multiplier, it is more meaningful to negate the inverse operation of multiplication with 0 (i.e. product △ 0 = multiplier)? In fact, 0 itself is a meaningless operation result. Why should there be such a strange saying that 0 times any number equals 0? Obviously, the rule only limits division, but not multiplication. Therefore, I think division is definitely an extension of multiplication, not just a simple inverse relationship. Of course, there's no problem with your name. ... unfold
Why not stipulate that 0 can not be used as a multiplier, but that zero can not be used as a divisor? If 0 is not allowed to be a multiplier, it is more meaningful to negate the inverse operation of multiplication with 0 (i.e. product △ 0 = multiplier)? In fact, 0 itself is a meaningless operation result. Why should there be such a strange saying that 0 times any number equals 0? Obviously, the rule only limits division, but not multiplication. Therefore, I think division is definitely an extension of multiplication, not just a simple inverse relationship. Of course, there's no problem with your name. Put it away
Multiplication and division; addition and subtraction; integration and differentiation are all reciprocal.
There is no problem in saying that multiplication is the inverse of division.
It is known that the sum of the first n terms of the arithmetic sequence {an} is Sn, and a1 + a3 = 10, S4 = 24 +1/Sn,
A1 + a3 = 102a2 = 10a2 = 5s4 = 24a1 + A2 + a3 + A4 = 24a4 = 9D = (a4-a2) / 4-2 = 2An = 3 + (n-1) 2 = 2n + 1sn = (3 + 2n + 1) n / 2 = n (n + 2) 1 / Sn = 1 / n (n + 2) you can bring in other terms after TN = (1 / n-1 / N + 2) 1 / 2 to eliminate some phases, so you should know it