Question

How do you evaluate the function `f(x)=5^x` at the value of `x=-pi`?

Answer 1

`f(-pi) approx 0.00637`

Explanation:

`f(x) = 5^x`

`:. f(-pi) = 5^-pi`

`= 1/5^pi`

`approx 1/(5^3.14159)`

`approx 1/156.992`

`approx 0.00637`