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Please help me with this calculus question


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I've forgotten everything learned in college. :tongue_smilie:

 

From Life of Fred, page 38

 

"using the delta process, find limit of ΔY / ΔT as ΔT approaches 0 for y=1/ T ^2"

 

My question is, how does one square or multiply a delta by another delta?

 

eg. (T+ΔT) X (T+ΔT)

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Delta T is an increment. Hence (T + DT)^2 = T^2 + 2TDT + (DT)^2. (Not sure how you entered the nifty deltas...) Do not be tempted to separate the Delta from the T --treat it as an entity.

 

Have you found a common denominator for the limit problem that is posed?

 

Sorry, I don't own LoF but I hope this helps.

 

Jane

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Delta T is an increment. Hence (T + DT)^2 = T^2 + 2TDT + (DT)^2. (Not sure how you entered the nifty deltas...) Do not be tempted to separate the Delta from the T --treat it as an entity.

 

Have you found a common denominator for the limit problem that is posed?

 

Sorry, I don't own LoF but I hope this helps.

 

Jane

 

 

Thanks so much, Jane. I really appreciate it! The nifty deltas - copied and pasted. :)

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