July 2016

Differential Equations

Submitted by agentcollins on July 17, 2016 - 7:52pm

3y-2yx^2 [ 1 + (ln (2x^3 / 3y^2))^2 ]dx - 2xdy =0

Differential Equations

Submitted by agentcollins on July 17, 2016 - 8:46pm

How can we simplify ln(9m^2 n -mn^3) +x +y = c ?

Differential Equation: [ e^(2y) - y cos (xy) ] dx - y(1 - x^2) dy = 0

Submitted by qwerty on July 18, 2016 - 5:46am

Please help me again to solve this.

(e2y-ycosxy)dx-y(1-x2)dy=0

Sydney Sales's picture

exact DE: [ 2x + y cos (x^2) - 2xy + 1 ] dx + [ sin (x^2) - x^2 ] dy = 0

Submitted by Sydney Sales on July 18, 2016 - 11:10am

[ 2x + y cos (x^2) - 2xy + 1 ] dx + [ sin (x^2) - x^2 ] dy = 0

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DE: 2xy dx + (y^2 + x^2) dy = 0

Submitted by Sydney Sales on July 18, 2016 - 11:22am

2xydx + ( y^2 + x^2 ) dy = 0

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DE: 2xy dx + (y^2 - x^2) dy = 0

Submitted by Sydney Sales on July 18, 2016 - 11:25am

2xydx + ( y^2 - x^2 ) dy = 0

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DE Order one: (xy^2 + x - 2y + 3) dx + x^2 ydy = 2(x + y) dy

Submitted by Sydney Sales on July 18, 2016 - 11:39am

(xy^2 + x - 2y + 3) dx + x^2 ydy = 2(x+y) dy

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DE exact equations: (3 + y + 2y^2 sin^2 x) dx + (x + 2xy - y sin 2x) dy = 0

Submitted by Sydney Sales on July 18, 2016 - 11:50am

(3 + y + 2y^2 sin ^ 2 ( x) ) dx + ( x + 2xy - y sin 2x) dy = 0

EdcelJames Delarosa's picture

More Topics on Dynamics

Submitted by EdcelJames Delarosa on July 19, 2016 - 3:55pm

Please upload more examples and answers on Dynamics sirs maam Thanks in advance

Differential Equation: y' = 2(3x + y)^2 - 1

Submitted by wackadoodle on July 21, 2016 - 11:09pm

How can i solve this problem y' = 2(3x+y)2-1 when x = 0, y =0. Can someone show me the solution ?

Juny Geraldizo Patierez's picture

detailed solution please? total energy of rotating rod

Submitted by Juny Geraldizo ... on July 24, 2016 - 9:37am

the rod is 10ft long weighing 20lbs. if it revolves through one end at 2rps, find the total energy.

Kevin Garabiles's picture

Engineering Mechanics -Dynamics

Submitted by Kevin Garabiles on July 25, 2016 - 10:12am

( PASAGOT NAMAN PO ASSIGNMENT LANG PO HINDI KO TALAGA MASAGOT,, SALAMAT NG MARAMI.)An automobile is to travel a distance from A to B of 540m in exactly 4seconds. The auto accelerates and decelerates at 1.8 m/s^2, starting from rest A to rest B find velocity, maximum speed.

Differential Equations: Population of a city in 1990

Submitted by agentcollins on July 26, 2016 - 10:33pm

The topic is Population Growth, Decay and Investment. Somebody show the comple solution please.

A city has been found to have a population that triples every four years. If the city's population is one million in 2010, how many people were there in 1990?

The answer is 4,116.

Joshua John Lopez Julio's picture

Angle of Rotation using area moment method

Submitted by Joshua John Lop... on July 28, 2016 - 6:14am

Do you have any sample problem in solving for the angle of rotation in the deflection of the beam at any point using area moment method? Thanks :)

Flora Mae Ramirez Quiño's picture

Integrating factors found by inspection

Submitted by Flora Mae Ramir... on July 30, 2016 - 10:09pm

y(2-3xy)dx-xdy=0

Sydney Sales's picture

equations

Submitted by Sydney Sales on July 31, 2016 - 12:51pm

ydx = {(e^ (3x) + 1)} dy

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DE

Submitted by Sydney Sales on July 31, 2016 - 12:55pm

y' = (x + xy^2)/4y

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homogenous

Submitted by Sydney Sales on July 31, 2016 - 2:28pm

v((2v^2) u -3) du + (3u^2) (v^2) - 3u + 4v) dv = 0

Find the complete or particular solution of the followiing D.E.

Submitted by asdfghjklmnop on July 31, 2016 - 3:17pm

1. y(x^2+xy-2y^2)dx+x(3y^2-xy-x^2)dy=0
2. (x+ysin y/x)dx-xsin y/x dy=0

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