1.If `x:y = 3:5` then find `(1/x+1/y):(1/x-1/y)`

Find the product of the binomials: (1/2x-1/5y)\ (1/2x-1/5y)

If (2x + 3,y-1) =(3,5) , then find x and y.

If 5^x=(0. 5)^y=1000 , then 1/x-1/y=

Find the product: (1-x+y)(1+x+y)

If 1//x + 1//y = 1//3 ,then (xy)/(x + y) =

Find the product: (1/3x-y^2/5)(1/3x+y^2/5)

Find the value of x and y (1)/(2x)+(1)/(3y)=2 (1)/(3x)+(1)/(2y)=(13)/(6)

If x > y > z >0, then find the value of cot^(-1)(x y+1)/(x-y)+cot^(-1)(y z+1)/(z y-z)+cot^(-1)(z x+1)/(z-x)

If x > y > z >0, then find the value of cot^(-1)(x y+1)/(x-y)+cot^(-1)(y z+1)/(y-z)+cot^(-1)(z x+1)/(z-x)

Draw the graph of x+2y =5 .From the graph , find (i) x_(1) the value of x when y =-1 (ii) y_(1) the value of y when x=-3