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Amalgamate
Mar 30th, 2009, 04:15 AM
Anti derivative of e^(.8x)?

kris719
Mar 30th, 2009, 04:21 AM
(5/4)e^(.8x) ?

is that right?

Amalgamate
Mar 30th, 2009, 04:23 AM
Seems right, thank you!

Amalgamate
Mar 30th, 2009, 04:35 AM
Last question, the integral of cos^2 (x)

LindsayRulz
Mar 30th, 2009, 04:59 AM
Integral of cos˛(x) dx = 1/2x + 1/4sin(2x) + C

Amalgamate
Mar 30th, 2009, 05:00 AM
Sorry to be a pain, but could you shed light onto how you got that answer?

moby
Mar 30th, 2009, 05:34 AM
Sorry to be a pain, but could you shed light onto how you got that answer?Use the double angle formula: cos(2x) = 2cos˛(x) - 1

Lin Lin
Mar 30th, 2009, 06:28 AM
I forgot this:sad:

I was very good at then time:sad:

azza
Mar 30th, 2009, 06:32 AM
shoe

bad_angel_109
Mar 30th, 2009, 09:28 AM
i hated calculus. i could never understand it properly.

eck
Mar 30th, 2009, 09:59 AM
I loved Calculus...too bad I forgot it :o

Daniel K
Mar 30th, 2009, 11:59 AM
Ahh calculus makes me ill just looking at it. I scraped through it with a 55 at university last year.