# Thread: Complex Number Exponential Differentiation

1. ## Complex Number Exponential Differentiation

Very confused on this topic, if possible could someone go through step by step how to do 19b and/or 20a (or b).

Sorry it won't seem to upload the right way around. Thanks for any help

2. ## Re: Complex Number Exponential Differentiation

Originally Posted by stormerze
Very confused on this topic, if possible could someone go through step by step how to do 19b and/or 20a (or b).
Sorry it won't seem to upload the right way around. Thanks for any help
Please either post a readable attachment or better yet learn to use Latex.
We cannot help if we cannot read the posting.

3. ## Re: Complex Number Exponential Differentiation

Is this viewable?

4. ## Re: Complex Number Exponential Differentiation

Originally Posted by stormerze
Very confused on this topic, if possible could someone go through step by step how to do 19b and/or 20a (or b).

Sorry it won't seem to upload the right way around. Thanks for any help
For all three, rewrite all the sines and cosines in terms of exponentials.

5. ## Re: Complex Number Exponential Differentiation

Yeah, I can do that. The only part that confuses me is the effect of the 51 in 20a

6. ## Re: Complex Number Exponential Differentiation

Originally Posted by stormerze
Yeah, I can do that. The only part that confuses me is the effect of the 51 in 20a
Show what you have done and exactly what about the 51st derivative confuses you.

7. ## Re: Complex Number Exponential Differentiation

I have Re [(1-[root3]i)^51*e^t(1+3i)]

Where do I go from there?

For 20b I have:

-[root2]^75*e^t(cost + isint)

Not sure where to go from there either.

8. ## Re: Complex Number Exponential Differentiation

http://www.mathhelpforum.com/math-he...rs-152616.html

Take a look at my post in this thread