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OpenStudy (lisa123):
Can someone please help me with a me with a derivative question???
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OpenStudy (campbell_st):
what is the question
OpenStudy (lisa123):
The position of an object at time t is given by s(t) = -8 - 9t. Find the instantaneous velocity at t = 1 by finding the derivative.
OpenStudy (campbell_st):
ok... so can you find the 1st derivative...?
OpenStudy (lisa123):
I think its s(t)=-9
OpenStudy (campbell_st):
close s'(t) = -9 which means the instantaneous velocity is a constant... so that means at t = 1 s'(1) = -9
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OpenStudy (lisa123):
so its just s'(1)= -9?
OpenStudy (campbell_st):
that's it... the constant -9 just means that for any t value, the velocity will be -9 hope it makes sense
OpenStudy (lisa123):
Yes it does! Thanks @campbell_st
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