Each of the following equations has at least one solution EXCEPT?
$$A.\ -2^n=-2^{-n}$$
$$B.\ 2^{-n}=-2^n$$
$$C.\ 2^n=-2^{-n}$$
$$D.\ -2^n=-2^n$$
$$E.\ -2^{-n}=-2^{-n}$$
The OA is A.
I'm confused with this PS question. Experts, any suggestion, please? How can I determine the solution of this question? Thanks in advance.
$$A.\ -2^n=-2^{-n}$$
$$B.\ 2^{-n}=-2^n$$
$$C.\ 2^n=-2^{-n}$$
$$D.\ -2^n=-2^n$$
$$E.\ -2^{-n}=-2^{-n}$$
The OA is A.
I'm confused with this PS question. Experts, any suggestion, please? How can I determine the solution of this question? Thanks in advance.
