# Homework Help: Calculus double integral

1. Mar 2, 2017

### Evilavatar2

1. The problem statement, all variables and given/known data

Hi, I am not asking for solution for any problem as i already have the given solution for the problem. Instead, what i want clarify is what do they mean by the odd and even function and how do they get 0? Also, is there a need to change the order from dxdy to dydx?

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2. Mar 3, 2017

3. Mar 3, 2017

### Evilavatar2

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4. Mar 3, 2017

### PeroK

Last edited by a moderator: May 8, 2017
5. Mar 3, 2017

### mastermechanic

It's even.

If the all exponential numbers are even the function is even, if all are odd function is odd and if there are both odd and even exponential numbers the functions is neither odd nor even.

6. Mar 3, 2017

### PeroK

And the sum of any two even functions?

7. Mar 3, 2017

8. Mar 3, 2017

### PeroK

If you want to generalise, you should be thinking about general even and odd functions.

Are you still confused about he one in your integral?

If so, try plugging in $x = 1$ and $x = -1$, say, and see how the function values compare.

9. Mar 3, 2017

### mastermechanic

I'm not the one who confused about the even-odd functions :D You should say it to topic owner

10. Mar 3, 2017

### PeroK

Sorry! Although, I'm not sure why you jumped in and answered the question I asked the OP?

11. Mar 3, 2017

### mastermechanic

I thought you asked because you really dont know it thats why I answered

12. Mar 3, 2017

### Evilavatar2

Thanks alot! i got it.