Domain of the function defined by 2^x + 2^y = 2 (or e^x + e^y = e)

1. A.
   $0 < x \leq 1$
2. B.
   $0 \leq x \leq 1$
3. C.
   $-\infty < x \leq 0$
4. D.
   $-\infty < x < 1$

Tap an option to check your answer.

1. A.
   $0<x\leq1$
2. B.
   $0\leq x\leq1$
3. C.
   $-\infty<x\leq0$
4. D.
   $-\infty<x<1$

Tap an option to check your answer.

1. A.
   $0 < x \leq 1$
2. B.
   $0 \leq x \leq 1$
3. C.
   $-\infty < x \leq 0$
4. D.
   $-\infty < x < 1$

Tap an option to check your answer.

1. A.
   $0<x\leq1$
2. B.
   $0\leq x\leq1$
3. C.
   $-\infty<x\leq0$
4. D.
   $-\infty<x<1$

Tap an option to check your answer.

1. A.
   $(1, \infty)$
2. B.
   $(-\infty, 1)$
3. C.
   $(-\infty, \infty)$
4. D.
   $(-\infty, 0)$

Tap an option to check your answer.