Mathematics
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OpenStudy (anonymous):
Calculus question! I have a picture of the problem in my comments
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OpenStudy (anonymous):
OpenStudy (anonymous):
Pleaseeee explain how you did it, and don't just give me an answer
OpenStudy (fibonaccichick666):
ok, so the velocity is the ________ of the position function.?
OpenStudy (solomonzelman):
Okay, so about which statements do you know for sure true or false ?
OpenStudy (solomonzelman):
explain why for each , please.
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OpenStudy (anonymous):
isnt the velocity the first derivative?
OpenStudy (anonymous):
idk I really have no idea where to even start. Im really confused
OpenStudy (solomonzelman):
Well, do all the statements that you can first... can you do any of them ?
OpenStudy (fibonaccichick666):
it is, so, can you find the velocity function?
OpenStudy (anonymous):
what do you mean do them?
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OpenStudy (fibonaccichick666):
basically, what we are going to do is look at the answers, and prove whichever true or false by calculaating the correct answer for each
OpenStudy (fibonaccichick666):
so, if velocity is first derivative of position, can you find the velocity function?
OpenStudy (anonymous):
the velocity is -4t + 5
OpenStudy (fibonaccichick666):
^ i would mark that incorrect because you have to have v(t)=-4t+5 but anywyas so now, is that a constant function?
OpenStudy (anonymous):
I dont know how to figure that out
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OpenStudy (fibonaccichick666):
what does it mean for something to be constant?
OpenStudy (anonymous):
not changing
OpenStudy (fibonaccichick666):
so does your velocity change?
OpenStudy (anonymous):
no?
OpenStudy (anonymous):
the derivative is a line right?
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OpenStudy (fibonaccichick666):
what is your variable?
OpenStudy (anonymous):
t
OpenStudy (fibonaccichick666):
does it change?
OpenStudy (anonymous):
no
OpenStudy (fibonaccichick666):
what does t represent?
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OpenStudy (anonymous):
the x value?
OpenStudy (fibonaccichick666):
no, it represents time
OpenStudy (anonymous):
so time changes
OpenStudy (fibonaccichick666):
yup so is the velocity constant?
OpenStudy (anonymous):
no
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OpenStudy (fibonaccichick666):
so is a true?
OpenStudy (anonymous):
no.
OpenStudy (fibonaccichick666):
alright that's one down
OpenStudy (fibonaccichick666):
now let's tackle b
OpenStudy (anonymous):
ok
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OpenStudy (fibonaccichick666):
the initial position occurs at t=?