y=-5^xy=5x, find domain and range?

1 Answer
May 2, 2018

x inRR,f(x)<0

Explanation:

We know that y=a^x can take any value for x, so the domain is x inRR.

However, y=-5^x is unable to reach zero, as xto-oo y->0, and since it is -f(x) all values will be negative. Range: f(x)<0