The graph of the function $f(x)=-e^x$ can be obtained from the graph of $g(x)=e^x$ by one of the following actions:
(a) reflecting the graph of $g(x)$ in the $y$-axis;
(b) reflecting the graph of $g(x)$ in the $x$-axis;
Your answer is (input a or b)
The range of the function $f(x)$ is $f(x) < A$, find $A$.
The value of $A$ is
Is the domain of the function $f(x)$ still $(-\infty,\infty)$?
Your answer is (input Yes or No)