If `A=(1)/(2)h(x+y)`, what is y inn terms A, h, and x?

If h=(y)/(x-y) , what is h+1 in terms x and y?

If ax+x^(2)=y^(2)-ay , what is a in terms of x and y?

If h=(x^(2)-1)/(x+1)+(x^(2)-1)/(x-1) , what is x in terms of h?

If (xy)/(x-y)=1 and xne-y , what is x in terms of y?

If the equation y=3x^(2)+18x-13 is written in the form y=a(x-h)^(2)+k , what are the values of h and k?

Let a function of 2 variables be defined by h(x, y)=x^(2)+3xy-(y-x) , what is the value of h(5, 4) ?

Statement-I: If H is the harmonic mean between a and b then (H+a)/(H-a)+(H+b)/(H-b)=(1)/(2) Statement -II: If H is the harmonic mean between x and y then H=(2xy)/(x+y)

If Sin h^(-1) x + Sin h ^(-1) y =1 then

If y=cos^(-1)(cosx),t h e n(dy)/(dx) is equal to x/y (b) y/(x^2) (x^2-y^2)/(x^2+y^2) (d) y/x