[求助]GWD16-31 很笨地問

A certain right triangle gas sides of length x, y, and z, where x<y<z. If the area of htis triangle regin is 1, which of the following indicates all of the possible values of y?

這題要如何解啊?

the area of htis triangle regin is 1

=>  xy=2 => y=2/x

and x<y

=> x<2/x => x平方<2 => x<根號2 => 帶入第一個條件(xy=2) => y>根號2