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MAA rk MATHEMATICAL ASSOCIATION OF AMERICA webwork/108-summer-2018/hw10-summer /

ID: 2885580 • Letter: M

Question

MAA rk MATHEMATICAL ASSOCIATION OF AMERICA webwork/108-summer-2018/hw10-summer / 3 HW10-summer: Problem 3 Previous Problem Lst Next -18x +4.(Give your answers as a comma (1 point) Find the inflection points (meaning the x-coordinates) of f(x) fx+34x separated list, e.g. 3-2 inflection points- Preview My Answers Submit Answens You have attempted this problem 0 times You have 6 attempts remaining. Email instructor Page generabed at 2018 a 12:48am COT WelWorK 1906-2016 themes math4 I ww.versionc 2,.121 pa.version: 2.121 The eBWork Project 20 1 F6 8

Explanation / Answer

f(x)=6x4+34x3-18x2+4

f '(x)= 6(4)x3+34(3)x2-18(2)x = 24x3+102x2-36x

f ''(x)= 24(3)x2+102(2)x-36=72x2+204x-36

Inflection point, f''(x)=0

72x2+204x-36=0

12(x+3)(6x-1)=0

x=-3,1/6