Hi, I'm stuck trying to obtain the cartesian equation of the function defined parametrically by x=1/2(t+1/t), y=1/2(t-1/t).
The book (Mathematics for Engineers, Croft / Davison) gives x^2 - y^2 = 1 as the answer, but I can't figure out how they got there. Ideas?
Perfect! Completely forgot about solving simultaneous equations (probably because they are dealt with later in the book). You have my thanks, sir.
By the way, how do you (and pretty much everyone on this forum) post math symbols as images? Is there a piece of software you guys use?
2. If you need the synatx of a Latex command you'll find it probably here: Helpisplaying a formula - Wikipedia, the free encyclopedia
Hi, I'm stuck trying to obtain the cartesian equation of the function
. . defined parametrically by: .
The book (Mathematics for Engineers, Croft/Davison) gives as the answer.
Square the equations: .
Subtract  from : . .