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Calculus/Finding a derivative

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Expert: - 8/28/2009


Question
Hi Paul,

Yeah, right.  Please disregard my previous question.

Please confirm if this is correct.

If y=2e^-4i
then,
dy/di=-8e^-4i

Thanks for your help.  

Answer
Questioner: Libby
Country: Singapore
Category: Calculus
Private: No
Subject: Finding a derivative
Question: Hi Paul,

Yeah, right.  Please disregard my previous question.

Please confirm if this is correct.

If y=2e^-4i
then,
dy/di=-8e^-4i

Thanks for your help.
.............................
Yes, that looks correct now. It's a chain rule exercise.  

Calculus

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Paul Klarreich

Expertise

All topics in first-year calculus including infinite series, max-min and related rate problems. Also trigonometry and complex numbers, theory of equations, exponential and logarithmic functions. I can also try (but not guarantee) to answer questions on Analysis -- sequences, limits, continuity.

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I taught all mathematics subjects from elementary algebra to differential equations at a two-year college in New York City for 25 years.

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(See above.)

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