how can I discribe a implicit equation for the Image of $$ f(t)=(\cosh(t),\sinh(t)), $$ knowing that this is an injective immersion? This doesn't look that hard, but I can't proceed.
Thanks in advance!
how can I discribe a implicit equation for the Image of $$ f(t)=(\cosh(t),\sinh(t)), $$ knowing that this is an injective immersion? This doesn't look that hard, but I can't proceed.
Thanks in advance!
Observe that $x^2-y^2=1$ so your image is contained in the hyperbola. Also, since $\cosh t>0$ your image is the right branch of the above equilateral hyperbola.