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August 26th, 2009, 10:14 PM   #1
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Three differential equations

Hi.

What would be the best way to solve next three differential so that the result it is not dependant from s. I know what the x, y, and z are. I need vx, vy an vz.

sqrt(vx^2+vy^2+vz^2) dvx/ds= -a b cos(theta) dx/ds

sqrt(vx^2+vy^2+vz^2) dvy/ds= -a b cos(theta) dy/ds

sqrt(vx^2+vy^2+vz^2) dvz/ds= -a dz/ds -a b cos(theta) dz/ds
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August 29th, 2009, 06:08 PM   #2
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Re: Three differential equations

Just multiply both sides by ds. Then they aren't depending on s.
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