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pochemuha
3 years ago
11

HELP NEEDED A.S.A.P. PLEASE & THANK YOU!!!!!!

Mathematics
1 answer:
andreev551 [17]3 years ago
4 0
Hello,

Answer B

y=-x^4+1
y'=-4x^3
y"=-12x² is always <0 : concavity downside.
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