i need help with this question please.
The functions f(x) and g(x) are defined below as:
f(x)=sinh(x)= [e^x- e^(-x)]/2 and g(x)= 1/(1+x^2 ) for all real x
Show that f(x)=g(x) has a unique solution for x in (-∞,∞).
Thanks for any help.
if you really want to incorporate infinity, you'd have to use limits.