Question

Find the domain and range of each function.
f(x)=3sinx

Answer 1

domain: all real numbers always for sin functions
range: look at the asymptote, it is -3 < y < 3

Answer 2

Unfortunately, the 2nd response is not helpful because it is inaccurate mathematically. The sine function has NO asymptote. The sine function is defined for all real numbers, so yes, the domain is "all real numbers," or (-infinity, infinity).