bahrom7893
Does anyone remember how to use differentials to approximate?



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bahrom7893
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Use differentials to approximate the change in the surface area of a sphere as the radius changes.

Algebraic!
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at what radius?

lgbasallote
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related rates?

Algebraic!
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no.

Algebraic!
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differentials.

Coolsector
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s = 4pir^2
so :
ds = 4pi * 2rdr
ds = 8pirdr

bahrom7893
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okay thanks

Coolsector
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yw

bahrom7893
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That's all I wanted to know @Coolsector , thanks, no useless info lol


Algebraic!
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no.

bahrom7893
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in related rates, you find the RATE of change

bahrom7893
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with differentials, you find the change itself