[sdiy] DSP book recommendation wanted
cheater cheater
cheater00 at gmail.com
Fri Sep 25 01:35:41 CEST 2009
Mathworld doesn't beat CRC in that CRC is an ordered, closed work and
mathworld is neither.
On Thu, Sep 24, 2009 at 11:22 PM, Dave Manley <dlmanley at sonic.net> wrote:
> Aaron Lanterman wrote:
>>
>> On Sep 24, 2009, at 3:15 PM, Nathan M. Reeves wrote:
>>
>>> lol
>>>
>>> if remember correctly...
>>>
>>> d/dx(cos(x))= -sin(x) <- yup
>>>
>>> d/dx(sin(x))= cos(x) <- yup
>>
>>>
>>> so...
>>
>> In the below three, remove the d/dx in front and put dx at the end and an
>> indefinite integral symbol in front
>>
>>> d/dx(cos(a x)) =-asin(a x) <- yup
>>>
>>> d/dx sin(a x) = acos(a x) <- yup
>>>
>>> d/dx e^(a x) = axe^(a x) <- remove the first x on the RHS, so it's a e^(a
>>> x)
>
> In the old days, the CRC Handbook of Chemistry and Physics or their Math
> Handbook was the standby reference, today we have Mathworld:
>
> http://mathworld.wolfram.com/Derivative.html
>
> :-)
>
> -Dave
>
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