Question

How to find the domain and the range of the following?​

Answer 1

Answer:

Step-by-step explanation:

for y= -1/(x²+2x-3)

the function f(x) is not defined when

x²+2x-3=0

x= -2±√(4-12)/2

x= -2±√(-8)/2

x= (-2±8i)/2

x= (-1±4i)

so, domain=R-{(-1+4i) , (-1-4i)}