One problem: finding the integral of [x ^ 2 / sqrt (x-x ^ 2)] DX two problems: finding the integral of [(x ^ 2 + X + 1) / (x + 1) ^ 50] DX Three questions: finding the integral of [(TaNx) ^ 4] DX

One problem: finding the integral of [x ^ 2 / sqrt (x-x ^ 2)] DX two problems: finding the integral of [(x ^ 2 + X + 1) / (x + 1) ^ 50] DX Three questions: finding the integral of [(TaNx) ^ 4] DX

One problem: finding the integral of [x ^ 2 / sqrt (x-x ^ 2)] DX 3 arc sin (2x-1) / 8 + (- X / 2-3 / 4) * sqrt (- x (x-1)) two problems: finding the integral of [(x ^ 2 + X + 1) / (x + 1) ^ 50] DX - (1176 * x ^ 2 + 49x + 1129) / (55272 * (x + 1) ^ 49) three problems: finding the integral of [(TaNx) ^ 4] DX 3x * ((COS x) ^ 3-3sinx (cos

What is the rule of 62 30 14 6 ()?

The answer is 2. The first number 62-2 = 60 divided by 2 equals the last number

(1) 3 − 2 − 2cos45 ° + (6 − 3) 0 (2) first simplify, then evaluate: 2A (a + b) - (a + b) 2, where: a = 2011, B = 2010

(1) The original formula = 19-2 × 22 + 1 = 19-2 + 1 = 109-2; (2) the original formula = 2A (a + b) - (a + b) 2 = (a + b) (2a-a-b) = (a + b) (a-b) = A2-B2. When a = 2011, B = 2010, the original formula = (2011) 2 + (2010) 2 = 2011 + 2010 = 4021

There are 45 science and technology books, two fifths less than story books. How many story books should be listed
There are also 75 storybooks, two-thirds more than science and technology books, and several science and technology books are also listed

There are 45 science and technology books, two fifths less than story books. How many story books should be listed
Suppose there are x storybooks
45 = x ( 1-2/5 )
X = 45 x 5 / 3 = 75 copies
There are 75 story books, two-thirds more than science and technology books. How many science and technology books
There are x scientific and technological books
75 = x (1+2/3)
x = 75 x 3/5
=45 copies
Benefactor, I see your bones are strange,
He is a man of noble bearing and wisdom,
He is a unique talent in the Wulin
If you devote yourself to study, you will become a great tool in the future,
I have a little test, please click next to the answer
"Choose as satisfactory answer"

A and B start from a and B at the same time. After 9 hours, they meet. When they meet, a takes 25 kilometers of the whole journey. A runs 15 kilometers less than B every hour. How many kilometers are there between the two places?

A: the distance between the two places is 675 km. B: 1-25 = 35, a: 15 × 9 = 135 (km), the distance between the two places is 675 km

One step is 3 decimeters. It's about 300 kilometers from Nanjing to Shanghai. How many steps do you need to take?

300 km = 300000 M = 300000 decimeters
3000000 / 3 = 1000000 (steps)

All answers to reading questions of Chinese everywhere in life

-What is the least common multiple of 12 and 3?

12

If y = x / 10; X is not equal to 0, then x and y are proportional, and the ratio of X and Y is () to be explained in detail

In inverse proportion
Y = x / 10 divided by X at the same time gives Y / x = 1 / 10, and vice versa

It is known that the relation of rational numbers a, B and C is A0, C / B / > / A /, and the reduction is: a + B / - / C-B / + / c-a/

Because
a0,c｜b｜>｜a｜
therefore
c