Question

What is the range of `f(x) = -3^x - 1`?

Answer 1

The answer is `f(x) in (-oo;-1)`

Explanation:

1. The exponential function `3^x` has values in `RR_{+}`
2. The minus sign makes the range `(-oo;0)`
3. Substracting 1 moves the graph one unit down and therefore moves the range to `(-00;-1)`

graph{(y+3^x+1)(y+1)=0 [-14.24, 14.23, -7.12, 7.12]}