The 100 kilogram apple from the fruit shop is two-thirds of the pear. How many kilogram pears are there ————————————————*3/2——————————

The 100 kilogram apple from the fruit shop is two-thirds of the pear. How many kilogram pears are there ————————————————*3/2——————————

150KG

What is 1 + (1 + 2) / 1 + (1 + 2 + 3) / 1 +... + (1 + 2 + 3 +... + 100) / 1?

∵1+2+3+...+n = n*(n+1)/2
∴1/(1+2+3+...+n) = 2/n*(n+1) =2*[1/n - 1/(n+1)]
So the original formula = 1 + 2 * (1 / 2-1 / 3 + 1 / 3-1 / 4 +... + 1 / 100-1 / 101)
=1+2*(1/2-1/101)=200/101

I1 + i2-i3 = 0 I1 + 4i3 = 18 I2 + 4i3 = 9 find I1 I2 i3

I1 + i2-i3 = 0 ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ',', ','

From the first floor to the second floor of Xiaogang's house, he has to walk 20 stairs. When Xiaogang comes home from school, he has to walk 60 stairs
Think about it. Xiaogang lives on the () floor

Xiaogang lives on the fourth floor
60 divided by 20 = 3,
3+1=4

8 / 5 + 1 / 2O + 1 / 50=

160/100+5/100+2/100
=167/100

Is the sum of diagonal elements of similar matrix equal in linear algebra? That is, tr (a) = tr (b)
How did you get there,

Yes, traces are similar invariants
If the trace is equal to the sum of all eigenvalues and the eigenvalues of similar matrices are all the same, then the trace is of course equal

If each boat has eight people, it's just full. If each boat has six people, it's necessary to rent two more boats
How many boats to rent, how many students in this class [thank you very much

Rent x boats for 8 person hour
Eight people in each boat. It's full. That's 8x
Each boat takes 6 people and rents 2 more boats, which is 6 × (x + 2)
8X=6（X+2）
8X=6X+12
2X=12
X=6
The total number of students is 6 × 8 = 48

Please answer the question, LIM (n tends to infinity) (1 ^ n + 2 ^ n + 3 ^ n) 1 / N power =? LIM (x tends to infinity) sin2x / x =?
LIM (x tends to 0) sin (SiNx) / x =?

The limit of 3 ＜ (1 ^ n + 2 ^ n + 3 ^ n) ^ (1 / N) ＜ [3 ^ (1 / N)] × 3 ∵ 3 ^ (1 / N) is 1 ∵ the limit of original formula 3-1 / X ≤ sin2x / X ≤ 1 / X (when x tends to infinity) ∵ the limit of original formula 0 sin (SiNx) / x = (SiNx) sin (SiNx) / X (SiNx) ∵

(1) If (2a's square + 2B's square + 3) (2a's square + 2B's square-3) = 27, then a's square + B's Square is equal to
(2) Given a + B = 5, ab = - 2, then the value of the square of 2A + the square of 2B - 2011 is
Write clearly according to the question number,

(1) If (2a's square + 2B's square + 3) (2a's square + 2B's square-3) = 27, then a's square + B's Square is equal to
(2a's square + 2B's square + 3) (2a's square + 2B's square-3) = 27;
(2a²+2b²)²-9=27;
(2a²+2b²)²=36;
∵a²≥0;b²≥0;
The results show that a & # 178; + B & # 178; ≥ 0 is tenable;
∴2a²+2b²=6;
∴a²+b²=3;
(2) Given a + B = 5, ab = - 2, then the value of the square of 2A + the square of 2B - 2011 is
a²+b²=(a+b)²-2ab=25+4=29;
2a²+2b²-2011=2×29-2011=58-2011=-1953;
If you don't understand this question, you can ask,

Did you translate that report from Chinese into English

Did you translate the report from Chinese into English?