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** 7.1 (a)** Series

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NOTE: The solution for 7.1 (an excerpt from the solutions manual) incorrectly shows partial derivative of R with respect to R1 in

bothterms, when the equation should account foreachof the two variables: Partial w/ respect to R1, and also partial w/ respect to R2: Perhaps the authors noted that since both partial derivatives equal 1, they were mathematically interchangeable? If so that would be correct - but misleading!

**(b)** parallel

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__7.3__

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The maximum error for this case is larger: