v=u+at

A car moves from X to Y with a uniform speed v_u and returns to X with a uniform speed v_d . The average speed for this round trip is : (a) (2v_(d)v_(u))/(v_(d)+v_(u)) (b) sqrt(v_(u)u_(d)) (c) (v_(d)v_(u))/(v_(d)+v_(u)) (d) (v_(u)+v_(d))/(2)

2u+3v=2,4u-6v=0 the value of u= ……….

Solve the following equations 8v-3u=5uv and 6v-5u=2uv

2u+3v=2,4u-6v=0 then v=……..

Solve :3(2u+v)=7u v , 3(u+3v)=11 u v

If y=(u)/(v) , where u & v are functions of 'x' show that v^(3)(d^(2)y)/(dx^(2)) = |{:(,u,v,0),(,u',v',v),(,u'',v'',2v'):}|

If y=(u)/(v) , where u and v are functions of x, show that v^(3)(d^(2)y)/(dx^(2))=|{:(u,v,0),(u',v',v),(u'',v'',2v'):}| .