[sdiy] DSP book recommendation wanted
Dave Manley
dlmanley at sonic.net
Fri Sep 25 00:22:54 CEST 2009
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
More information about the Synth-diy
mailing list