`(xy)/(x+y)=6/5 ; (xy)/(y-x)=6`

Find x and y when (7x-2y)/(xy)=5 (8x+7y)/(xy)=15

The solution of the ( dy )/(dx) = (xy+y)/(xy+x) is :

When x=5 and y=2 , the expression (xy)/(70)+(9)/(5(x+y))+(1)/(x+y)=?

If x=sqrt(6) and y^(2)=12 , then (4)/(xy)=

Multiply : 3 - (2)/(3)xy + (5)/(7)xy^(2) - (16)/(21)x^(2)y by -21 x^(2)y^(2)

Find (x)/(y) , when x^(2) + 6y^(2) = 5xy .

Statement 1: If e^(xy)+ln(xy)+cos(xy)+5=0, then (dy)/(dx)=-y/x . Statement 2: d/(dx)(xy)=0,y is a function of x implies(dy)/(dx)=-y/x .

The differential equation of all conics whose centre klies at origin, is given by (a) (3xy_(2)+x^(2)y_(3))(y-xy_(1))=3xy_(2)(y-xy_(1)-x^(2)y_(2)) (b) (3xy_(1)+x^(2)y_(2))(y_(1)-xy_(3))=3xy_(1)(y-xy_(2)-x^(2)y_(3)) ( c ) (3xy_(2)+x^(2)y_(3))(y_(1)-xy)=3xy_(1)(y-xy_(1)-x^(2)y_(2)) (d) None of these

if sintheta = x and sectheta = y, then tantheta is : (a)xy, (b) x/y , (c) y/x , (d) 2/(xy)

If x=4 and y=1, find the value of ((x)/(2)-(y)/(3))((x^(2))/(4)+(xy)/(6)+(y^(2))/(9)) .