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OpenStudy (earthcitizen):
f(x)= (45x^2-5x-4)/〖(10x^2+1)〗^2 . Determine the stationary points of f(x)
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sam (.sam.):
Find dy/dx, then equate dy/dx to 0, then solve for x from dy/dx=0
sam (.sam.):
Quotient rule
OpenStudy (earthcitizen):
alryt, i've diff http://www.wolframalpha.com/input/?i=%2845x%5E2-5x-4%29%2F%2810x%5E2+%2B1%29%5E2
sam (.sam.):
Use that answer equals to 0
OpenStudy (earthcitizen):
do i solve x from the polynomial ? \[-(5(180x^3-30x^2-50x+1))/(10x^2+1)^3 =0\]
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sam (.sam.):
yep
OpenStudy (earthcitizen):
kk, thank you!
sam (.sam.):
yw
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