- #1

- 587

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Thanks.

- Thread starter Angry Citizen
- Start date

- #1

- 587

- 0

Thanks.

- #2

- 1,796

- 53

Know what, I use to play tennis. But my back-hand use to suck. So for a while I just hit it solely back-hand. Yeah, it went all over the place . . . for a little while. But then something happened. I started getting good at it and before long it didn't suck no more. Good cooks try again when they mess up a recipie and pretty soon they cookin' up something good. How they get so good? They're willing to try and fail and then try some more. So get out there, knock that ball all over the place and pretty soon you'll be cookin' up something nice too.but I just don't know why I can't do them.

Thanks.

- #3

- 11

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What a statement.

- #4

- 587

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In a sense, it's like if you were trying to practice backhanding tennis balls ... if they were thrown from two states away.

- #5

- 1,796

- 53

[tex]y''+(2x+3)y'+4y=0[/tex]

Ok, get that one straight then change it slightly like:

[tex]y''+(4x+3)y'+4y=0[/tex]

Now do that on on your own. Bet you could if you got the first one straight.

Now, little more complex:

[tex]y''+(4x^2+3)y'+4y=0[/tex]

Do that one. Same dif with the singular ones like:

[tex](x^2+4x+2)y''-(2x+4)y'+3x^2y=0[/tex]

First drop everything but just one x:

[tex]xy''+y'+y=0[/tex]

Or if that one is too hard, move it over:

[tex]y''+y'+xy=0[/tex]

Too hard?

[tex]y''+xy=0[/tex]

Keep dropping it down until you get it, then start building it back up.

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