Help answer plz especially question part D?

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1 Answer
Dean R.
May 17, 2018

#t = (-1/2) 6/{root[3]{.9}-1} approx 86.9 #

Explanation:

Just part d?

We have #x=2kt+ {6k}/{root[3]{.9}-1}# and we want to know when #x=0.#

We don't even have to bother to solve for #k,# which cancels.

#0 = 2kt+ {6k}/{root[3]{.9}-1}#

#-2t = 6/{root[3]{.9}-1}#

#t = -3/{root[3]{.9}-1} approx 86.9 #

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