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- Thread starter ltn
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A comprehensive introduction to optimization with a focus on practical algorithms for the design of engineering systems.This book offers a comprehensive introduction to optimization with a focus on practical algorithms. The book approaches optimization from an engineering perspective, where the...

books.google.com

My best guess is that you are expected to use the limit definition of the derivative, and hope it will be meaningful.

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Good point. I missed that one.Is [imath]h[/imath] real? If [imath]f[/imath] is a real valued function, how can [math]f(3+2ih) = 2+ 4ih[/math]?

Hello!

Turns out this problem could be solved using this equation (link for reference)

So, eventually:

[imath]f'(x)=\frac{lm(2+4ih)}{h}= 4h/h = 4[/imath]

Turns out this problem could be solved using this equation (link for reference)

So, eventually:

[imath]f'(x)=\frac{lm(2+4ih)}{h}= 4h/h = 4[/imath]

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