Discover Questions

Proof of water on mars? Limit as x approaches 0 of (x + 3sinx)/(2x) ? i know the answer is two but i dont know how it came to be. help.? The electric potential at a point in space is placed there, what will its potential energy U be? Give the value of x and y? How do you raise a complex number to a complex power?
What is (a + bi)^(c + di)?