Related Rates #5 Involving Baseball!
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then about 10 other people will say: you go too slow
1 year ago 11
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@kbyrd817 hahahah. people on the internet prefer to complain though : )
1 year ago 10
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can you please lend me your mind even just for a day?
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Patrick are you sure the answer to this problem is 4sqrt5?I got -20/sqrt5.Let me know.
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@fcmilsweeper9 (90-x) is not a constant, it's a variable because it can change.
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Nvm figured it out : P
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Instead of assigning x to the distance he has already run, I made x the distance between the runner and first base. Then I just changed the sign on dx/dt, making it -20 to reflect the fact that his distance to first base is decreasing at a rate of 20 ft/sec. This allowed me to avoide using the binomial (90 - x) and made the differentiation slightly easier. I got the same answer, but I wanted to know if there is anything wrong with my reasoning here.
dindelicato 2 months ago in playlist Calculus / First Semester - Limits, Continuity, Derivatives
@dindelicato nope, it is 100% perfect. many ways to do the problem
patrickJMT 2 months ago
you should be a math TA here in Canada, my university pays like 50/hr for TAs!
23SuS23 2 months ago
@23SuS23 i make more than that when i tutor ; )
patrickJMT 2 months ago 7
Wait...The deriv of (90-x) is 0 if (90-x)=45...
fcmilsweeper9 2 months ago
@fcmilsweeper9 nooooooooooooooooooooooooooo
patrickJMT 2 months ago 4