Hi, this is my first post on this forum ..(adsbygoogle = window.adsbygoogle || []).push({});

My education is ship-electrician, I'm not starting calculus until next semester when I start on my engineering degree .. I've started reading stuff on my own and I'm doing a circuit simulation ..

Here's my function: (KCL)

[tex]

{\frac {{\it vaa}-{\it vout}}{{\it ra}}}-{\it lookupIa} \left( {\it

vgk} \right) -{\frac {{\it vout}}{{\it rload}}}=0

[/tex]

I need help to find the derivative of this function to use it with a newton method iteration..

lookupIa(vgk), is my lookuptable in C++ and I have no clue how to solve this function when it depends on a second function.. ;)

I'm a complete idiot on this subject at the moment, any help on this and I'm forever grateful!

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# Need help finding a derivative

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