Mathematics
16 Online
OpenStudy (anonymous):
help me
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OpenStudy (anonymous):
@MadisonEmery
OpenStudy (anonymous):
What do you think it is?
OpenStudy (anonymous):
c
OpenStudy (anonymous):
am i right
OpenStudy (anonymous):
i am pretty sure c is correct but let me check 1 last time
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OpenStudy (anonymous):
what is the x at the bottom of the problem
OpenStudy (anonymous):
idk lol
OpenStudy (welshfella):
Note: as x approaches 1 the denominator approaches zero
OpenStudy (welshfella):
you can use l'hopitals theorem to do this
find the derivative of the numerator and the denominator and plug in x = 1
OpenStudy (welshfella):
are you familiar with this?
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OpenStudy (anonymous):
\[\frac{x^3+5 x^2+3 x-9}{x-1}=x^2+6 x+9 \]When x = 0, x^2+6 x+9=9
OpenStudy (anonymous):
omg to many people helping lol this is consufing
OpenStudy (welshfella):
c is not right
OpenStudy (anonymous):
ok then what is
OpenStudy (welshfella):
have you done l'hopitals rule in calculus?
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OpenStudy (anonymous):
i have not
OpenStudy (welshfella):
oh well i can't think of any other way to do this. There probably is though...
OpenStudy (anonymous):
man i just need to answer this question is there aother way to help with this
OpenStudy (welshfella):
oh ok
if we factor the numerators we get
(x - 1)(x^2 + 6x + 9)
------------------
(x - 1)
so the x-1 cancels out to give x^2 + 6x + 9
OpenStudy (welshfella):
now plug in x = 1 into x^2 + 6x + 9 and see what you get
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OpenStudy (anonymous):
i got 16
OpenStudy (welshfella):
thats the answer
OpenStudy (welshfella):
ok?