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OpenStudy (anonymous):
Find the values of C such that the graph of F(x)=x^4+2x^3+Cx^2+2x+2 is concave upward everywhere @Mathematics
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OpenStudy (asnaseer):
concave upwards implies the 2nd derivative is less than zero.
OpenStudy (asnaseer):
do you know how to calculate the 2nd derivative?
OpenStudy (jamesj):
You mean the 2nd derivative is GREATER than zero.
OpenStudy (asnaseer):
yes, @JamesJ is right, I only read the "upward everywhere" part and assumed the wrong shaped curve. this site may help explain more: http://www.math.hmc.edu/calculus/tutorials/secondderiv/
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