![](data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 72 71" width="72"></svg>)
The order of the differential equation f [x, y, y ', (y' ') ^ 2, y ^ 9 = 0 is______ . Online solution, to process, thank you
two
What order differential equation is XY '' '+ 2x ^ 2 * y' ^ 2 + x ^ 3Y = x ^ 4 + 1
The highest is Y "'
So it is a third order differential equation
Find the special solution of the differential equation y '+ 3Y = e ^ (- 2x) satisfying the initial condition y ∣ x = 0 = 2
Find the special solution of the differential equation y '+ 3Y = e ^ (- 2x) satisfying the initial condition y ∣ x = 0 = 5
There are introductions in general advanced mathematics textbooks
Let α be the second quadrant angle and | cos α / 2 | = - cos α / 2, then the value range of α / 2 is?
If α is the second quadrant angle, then α ∈ (2k π + π / 2, 2K π + π), so α / 2 ∈ (K π + π / 4, K π + π / 2), and because | cos α / 2 | = - cos α / 2, so α / 2 is in the second and third quadrants, so α / 2 ∈ (2k π + 5 π / 4, 2K π + 3 π / 2)
Using the pinch criterion to calculate limn tends to infinity (a ^ n + B ^ n) ^ 1 / N (a > 0, b > 0)
Hope to help you & nbsp; also hope to adopt~
If x is the fourth quadrant angle and | cosx / 2 | = - cosx / 2, then what quadrant angle is x / 2?
X is the fourth quadrant
2kπ-π/2
Using the pinch criterion to calculate limn [arctan ((n ^ 2) + 1) + arctan ((n ^ 2) + 2) +... + arctan ((n ^ 2) + n) - (n π / 2)] n tends to infinity
n^2[arctang((n^2)+1)-π/2]
Given that the point m (1-A, a + 2) is in the second quadrant, then the value range of a is______ ．
∵ point m (1-A, a + 2) is in the second quadrant, ∵ 1 − a ＜ 0A + 2 ＞ 0, the solution is: a ＞ 1
It is proved that limn tends to infinity, N / √ n & # 178; + n = 1
It is known that the straight line (3a-1) x + (2-A) Y-1 = 0, but the value range of a in the second quadrant is?
Because the line is not in the second quadrant, so
When x = 0, y ＜ = 0
That is, 1 / (2-A) ＜ = 0
A 〉 = 2
And when y = 0
X 〉=0
It is the same
a>=1/3
That is a > = 2
RELATED INFORMATIONS
- 1. General solution of differential equation y "- 6y '- 16y = 0
- 2. ∂ ^ 4Y / & # 8706; X ^ 4 + & # 8706; ^ 2Y / & # 8706; T ^ 2 = 0 how to decompose into ordinary differential equation, the basic solution is y (x, t) = w (x) Q (T)
- 3. Differential equation 2Y '' - sin2y = 0, initial condition y (x = 0) = pi / 2, y '(x = 0) = 1!
- 4. General solution of differential equation x ^ 2dy + (y-2xy-x ^ 2) DX = 0
- 5. How to determine the free term in the second order linear differential equation with constant coefficients, for example, the second derivative of Y + the first derivative of y = e ^ 2x The form of the special solution is x ^ KQ (x) e ^ UX. I just don't know what the Q (x) should be and how to determine it. Sometimes it's ax + B, but there's a. under the guidance of the above example, q (x) = a, why can't I take other values? Isn't Q (x) a value ax + B
- 6. Let y = E2x + (1 + x) ex be a special solution of the second order linear differential equation y ″ + α y ′ + β y = γ ex with constant coefficients. Try to determine the constants α, β and γ and find the general solution of the equation
- 7. Find the general solution or special solution of Y '= (Y / x) (1 + LNY LNX) differential equation
- 8. The general solution of the differential equation y '+ y + LNX = ax is?
- 9. What's the integral of LNX?
- 10. LNX reciprocal integral How to find the integral of 1 / LNX? There are also limits for the sum of sequences [(k Power of a) / k], where a = 2 / 2 root sign 2, k = 1,2,3,. N, n tend to infinity
- 11. Can Mathematica be used to solve the differential equation: y '' - ay = 0 (a is an unknown number)? And then there are several unknowns in the equation of many variables. I want to find one of them and express it in others,
- 12. We have just started to contact Mathematica to solve the differential equation y '= x ^ 2 + y ^ 2, y (0) = 0
- 13. Find the special solution of the differential equation y "- 4Y '+ 3 = 0 satisfying the initial conditions y (0) = 1, y' (0) = 5
- 14. Finding the general solution of the second order constant coefficient non second order linear differential equation y '' + 3Y '+ 2Y = 3sinx
- 15. Solving differential equations with undetermined coefficients y′′ + 3y′ + 2y = x y′′ − x^3 + 1 = 0
- 16. How to solve the differential equation (x ^ 2 + 1) y '' = 2XY '
- 17. General solution of differential equation y '- 2XY = 0
- 18. The general solution of differential equation d ^ 2Y / DX ^ 2 + W ^ 2Y = 0? Which (C, C1 and C2 are arbitrary constants) y = coswx y = csinwx y = c1coswx + c2sinwx Please explain a little bit
- 19. The function y = CX ^ 3 is a differential equation____ The general solution of the problem
- 20. Differential equation 2ydx + (y ^ 2-6x) dy = 0