Move a match to make the formula true 561-166=379

561-186 = 375, one of 9 is given to 6, resulting in 5 and 8

Move only one match in each formula to make it true

11-1 + 1 = 11, that's it

2.808 △ 0.36 = vertical calculation

Hello, I hope I can help you

Arcsinx / X tends to zero limit in X
This problem comes before infinitesimal, so there should be a direct method instead of the equivalent infinitesimal of arcsin X,

The simplest solution is as follows:
Let y = arcsinx = > x = siny;
The original formula is Y / siny = 1

If a solution of the quadratic equation AX + 3Y = B is x = 3, y = 0, then what is the coordinate of a point on the graph of the linear function y = A / 3 + B / 3?

x=3,y=0
3a=b
So y = ax / 3 + 3A / 3 = a (x + 3) / 3
So x = - 3
y=a×0/3=0
So the point is (3,0)

Seeking sequence: 51, 56, 68, ()
A.74 B.104 C.84 D.94

The answer is d,
51,56,68,（94 ）
The difference between them is as follows:
5 12 26
12 = (2 times of 5 + 2)
26 = (2 times of 12 + 2)
68+26=94

The book says: if the left and right derivatives exist and are equal at x0, the function must be differentiable at that point
For example, the piecewise function f (x) = x + 2, x > 0
f(x)=x x

If the right derivatives exist and are equal, the function must be differentiable at this point
In your case, the right derivative does not exist at x = 0

How is 7744 equal to 24

7 × (4 - 4 ÷ 7)

The influence of the Three Gorges Dam on the Three Gorges

Some experts say that the construction of the Three Gorges dam has both merits and demerits. Let's not talk about the good. Its main negative impact is an impact on the ecology of the middle and lower reaches of the Yangtze River. Although there is no big impact yet, this impact is lagging behind

When x tends to zero, sin (SiNx ^ 2) is an infinitesimal of 3x ^ 2 + x ^ 3. The answer is the same order. Why!
Such as the title

When x tends to zero, Lim sin (SiNx ^ 2) / (3x ^ 2 + x ^ 3)
=lim x^2/(3x^2+x^3)
=lim 1/(3+x)
=1/3.
So it is infinitesimal of the same order

Move a match to make the formula true 561-166=379