Recent content by danny12345

how do you convert this [-s(s-(s-1)-2s+n(n+1)] into (n-s)(n+s+1)

how?

2xy'=3y' first how do i find it's solution

so what then?

v=volume

it's w=(p2-p1)(v2-v1)

it's w=(p2-p1)(v2-v1)

Homework Statement Q3.1 (a) A pump forces 1m^3 /min of water horizontally from an open well to a closed tank where the pressure is 0.9 Mpa.compute the work the pump must do upon the water in an hour just to force the water into the tank against the pressure.sketch the system upon which the work...

but the question asked for regrouping.the thing you are telling is not required in this question.

no i got it simply expand and make the common.common is not possible so we have to multiply it with some x^ny^n to the whole equation so we can make the common on(xdy+ydx) or(xdy-ydx). multiply the expanded part by xy. it becomes 4x^3y^4dx-2xy^2dx+3x^4y^3dy-x^2ydy=0 now...

what that means?

you are?

Homework Statement (4x^3y^3-2xy)dx+(3x^4y^2-x^2)dy=0[/B]Homework Equations (4x^3y^3-2xy)dx+(3x^4y^2-x^2)dy=0 The Attempt at a Solution i expanded it as 4x^3y^3dx-2xydx+3x^4y^2dy-x^2dy=0 next we have to take the common such that there will be m(X)(xdy+ydx)[/B] m(x) is the common onee

help me in getting full use of this site for my sucess

$y(x^3e^{xy}-y) \, dx+x(xy+x^3e^{xy}) \, dy=0$ change it into exact differential and help me in solving it