1,279 Answered Questions for the topic differential equations

Differential Equations

06/19/13

Solve the differential equation?
Solve the differential equation y^(4)-5y"-36y=0. r^4-5r^2-36 (r^2-9)(r^2+4) r=3, -3, 2i, -2i y=c1*e^3x+c2*e^-3x+c3(cos(2x))+c4(sin(2x)) Is that the right answer? And can someone give me some... more
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Differential Equations

06/18/13

Help me with Differential Equations?
Solve the differential equation y"+4y=0. r^2+4=0   r=2i, -2i Now what?
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Differential Equations

06/16/13

Solve the differential equation?
Solve the differential equation (2xy+y^3)dx+(x^2+3xy^2-2y)dy=0. I got x^2*y+xy^3+yx^2+xy^3-y^2=C but that's not the answer. And is Differential Equations taught after Linear Algebra? If so, then... more
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Differential Equations Calculus Maths Math Help

04/29/13

calculus question......
the position function s of a point is given by two dimensional quantities  where t in seconds and the y direction is affected by gravity (10m/s/s). y(t)=4t*sin(θ) - 5t2       &      ... more
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