Question

Find the distance between -1 and a point x, assuming that the point x is greater than -1.

Answer 1

Is it (x) - (-1) = x + 1?

Answer 2

no... the distance is |-1 - x| no matter what x is....

Answer 3

Oh yes absolute value comes in.

Answer 4

Absolute value means distance from zero. He's added -1 so it becomes distance from -1.

Answer 5

But then if x is greater, then we could say x + 1 right?

Answer 6

@dpaInc

Answer 7

Hey you were right @QRAwarrior

Answer 8

Ok great! Thank you.

Answer 9

:)

Answer 10

Also, I have one more question:

Integrate:

(x)(e^{-x^2}) dx

Is this integrable?