lim(x->0) (sin2x)/(tan2x) 2/3

lim(x->0) (sin2x)/(tan2x) 2/3

lim(x→0)sin2x/tan2x=lim(x→0)cos2x=1
as sure as a gun!

"Urgent!"... Calculus.. LIM (LNX / x) x - > 0 how much is lim
LIM (INX/X)
x->0

Negative infinity

Calculus LIM (x → 1) | - X-1 | - X-1=

lim(x→1+)|x-1 |\(x-1)=1
lim(x→1-)|x-1 |\(x-1)=-1

The general solution of Y '' '- 8y = 0 differential equation

Characteristic equation R ^ 3-8 = 0
(r-2)(r^2+2r+4)=0
r=2,-1±√3i
So the general solution is: y = C1E ^ (2x) + e ^ (- x) [c2sin (√ 3x) + c3cos (√ 3x)]

A special solution of Y "- 9y = cos3x-sin3x can be set as____________

A special solution of Y "- 9y = cos3x-sin3x ① can be set as y = acos3x + bsin3x, then y '= - 3asin3x + 3bcos3x, y' '= - 9acos3x-9bsin3x, substituting into ①, - 18acos3x-18bsin3x = cos3x-sin3x, the comparison coefficient is - 18a = 1, - 18B = - 1, the solution is a = - 1 / 18, B = 1 / 18

1. The general solution of the differential equation y "- 9y = 3x & # needs to be solved urgently

Characteristic equation R ^ 2-9 = 0
r1=3 r2=-3
Let y * = ax ^ 2 + BX + C
y*'=2ax+b
y*''=2a
So - 9A = 3 - 9b = 0, 2a-9c = 0
a=-1/3 b=0 c=2a/9=-2/27
Therefore, the general solution is y = C1E ^ 3x + c2e ^ (- 3x) - (1 / 3) x ^ 2 - (2 / 27)

Higher order differential equation y '''y '' = 2
The general solution that the third derivative of Y multiplied by the second derivative of Y equals 2

Do you want to solve the differential equation?
Do you want to solve the first and second order differential equations

Test, and generally there will be questions, either fill in the blanks or big questions

Differentiate y= 1000000 * (1.6 ^ (0.25x))
Differential equation:
Differentiate y= 1000000 * (1.6 ^ (0.25x))
1 day ago - 1 week left to answer.

y = 1000000×[1.6^(¼x)]= 1000000×e^{ln[1.6^(¼x)]}= 1000000×e^[(¼x)ln1.6]dy/dx = 1000000×{e^[(¼x)ln1.6]}×¼ln1.6= 250000×{e^[(¼x)ln1.6]}×ln1.6= 250000×[1...

A general solution to the square of Y '= (x + y)
Let u = x + y

Let t = x + y, then y '= DT / DX-1 ∫ DT / DX-1 = T & sup2; = = > DT / DX = T & sup2; + 1 = = > DT / (T & sup2; + 1) = DX = = > arctant = x + C (C is an integral constant) = = > t = Tan (x + C) = = > x + y = t