What is the distance between #(-1,4,9)# and #(1,-7,2)#?

Answer 1

Eva Abramson

sqrt(174)

Just use distance formula (norm method)

#sqrt(x_(dist)^2+y_(dist)^2+z_(dist)^2)#

#sqrt(2^2+11^2+7^2)# #sqrt(4+121+49)# #sqrt(4+170)# #sqrt(174)#

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Answer 2

Hazel Anglin

The distance between (-1,4,9) and (1,-7,2) is approximately 16.49 units.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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