一道微积分的数学题,谁来帮我解一下...（alevel进阶数学的）英语好的来..Solve the equation dy/dx=-g-kv given that v=u t=0,and that u,g,k are positive constant.Sketch the curve indicating the velocity which v approaches as t becomes large.不用画图,帮我解一下那个方程就好>

一道微积分的数学题,谁来帮我解一下...（alevel进阶数学的）英语好的来..
Solve the equation dy/dx=-g-kv given that v=u t=0,and that u,g,k are positive constant.
Sketch the curve indicating the velocity which v approaches as t becomes large.
不用画图,帮我解一下那个方程就好>