36x & # 178; - 1 = 0 to solve the equation

36x & # 178; - 1 = 0 to solve the equation

36x²－1=0
36x² =1
(6x)²=1
6x=±1
x=±1/6

Simplify | 2x-3 | + | 3x-5 | - | 5x + 1 |,

(1) When x > = 5 / 3
|2x-3|+|3x-5|-|5x+1|
=2x-3+3x-5-5x-1
=-9
(2)3/2

A simple method to divide 0.63 into 1.4

0.7X0.9/0.7X2=0.9/2=0.45

All integers are combined to form (); all rational numbers are combined to form ()

All integers together to form (a set of integers); all rational numbers together to form (a set of rational numbers)

On the number axis, the distance from the point to the origin represented by the solution of 3x-4k = 2 is 3, and the value of K is obtained

X = 3 or - 3
4K = - 9-2 or 9-2
K = - 11 / 4 or 7 / 4

What's the volume of a cuboid with a square bottom, which is 80 cm in length and 8 cm in height?

The sum of length, width and height is
80 △ 4 = 20 (CM)
What is the length and width
(20-8) △ 2 = 6 (CM)
What is the volume of a cuboid
6 × 6 × 8 = 288 (cm3)

Lim an = 0 (n - > infinity) prove LIM (a1 + A2 +... + an) / N = 0 (n - > infinity)

Because Im an = 0 (n - > infinity)
So for any small E > 0, there exists n such that when n > n
Make an

What is the remainder of 2, 000 8 divided by 26?

The remainder is 888 / 26, the remainder is 10888 / 26, the remainder is 48888 / 26, the remainder is 2288888 / 26, the remainder is 2088888 / 26, the remainder is 08888888888 / 26, the remainder is 8 In turn, 6 8 are 1 cycle, the remainder is 0, so 2000 82000 divided by 6, the remainder is 2, so 2000 8 divided by 26 and 2 8 divided by 26

Simple operation questions: (7 / 28) * (15 / 8) + (13 / 28) * (7 / 8)

(7/28)*(15/8)+(13/28)*(7/8)
=7/(28*8)×(15+13)
=7*28/(28*8)
=7/8

Solving ordinary differential equation y '' + 3Y '+ 2Y = 1 / (e ^ x + 1)
RT
How to find the special solution of this equation?

2. Let e ^ x = t, y = P (T), then y '(x) = TP' (T), y '= TP' + T ^ 2p '', T ^ 2p '' + 4tp '+ 2p = 1 / (T + 1), that is, (T ^ 2P)' = 1 / (T + 1),
So p = (T ^ (- 1) + T ^ (- 2)) in (T + 1) - T ^ (- 1) + C1t ^ (- 1) + c2t ^ (- 2)
The general solution is y = (e ^ (- x) + e ^ (- 2x)) in (e ^ (x) + 1) - e ^ (- x) + C1E ^ (- x) + c2e ^ (- 2x)