Question #aef8a

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Mar 27, 2017

#y^((4)) = 24x^-5 = 24/x^5#

Explanation:

Find the Fourth derivative:
#y = 2x^2 + x-1 + 1/x = 2x^2 + x-1 + x^(-1)#
#y' = 4x + 1 -x^(-2) = 4x + 1 -1/x^2#
#y'' = 4 +2x^-3 = 4+2/x^3#
#y''' = -6x^-4 = -6/x^4#
#y^((4)) = 24x^-5 = 24/x^5#

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