haha, i saw that video once, it's a fairly easy integral, so i consider they are trying to prove your intelligence and speed altogether.

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- Jan 27th 2011, 06:48 AMKrizalid
haha, i saw that video once, it's a fairly easy integral, so i consider they are trying to prove your intelligence and speed altogether.

- Jan 27th 2011, 09:28 AMFernandoRevilla

Some books (for example*Demidovich*) include the following formula in the Table for immediate integrals:

In that case, and taking into account that we needn't an elegant development, and that the euclidean division is almost immediate, the integral can be computed in less than 20 seconds. :)

Fernando Revilla - Jan 27th 2011, 12:42 PMtom@ballooncalculus
Nice case of the 'addition/subtraction' method in no. 14.

As with no.s 2 and 16, start parts with one half of it and it's all over 'too' soon...

http://www.ballooncalculus.org/draw/parts/eight.png

... where (key in spoiler) ...

__Spoiler__:

_________________________________________

Don't integrate - balloontegrate!

Balloon Calculus; standard integrals, derivatives and methods

Balloon Calculus Drawing with LaTeX and Asymptote! - Jan 27th 2011, 01:28 PMtom@ballooncalculus
Is this party over? Oh well, anyway... no.11

http://www.ballooncalculus.org/draw/parts/nine.png

... where (key in spoiler) ...

__Spoiler__:

_________________________________________

Don't integrate - balloontegrate!

Balloon Calculus; standard integrals, derivatives and methods

Balloon Calculus Drawing with LaTeX and Asymptote! - Jan 28th 2011, 05:14 AMJester
2)

- Jan 28th 2011, 03:16 PMcarrot

- Jan 31st 2011, 02:48 AMTheCoffeeMachine
I thought the following three integrals were very similar to those in the test:

1.

2.

3. .

All three can be solved without explicit substitution (the last being the easiest). - Jan 31st 2011, 01:21 PMDrexel28
- Feb 1st 2011, 02:59 AMTheCoffeeMachine