find the 2nd derivative:f(x)=x^4 + (3/x)?

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2007-10-24 09:30:46 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics

f (x) = x^4 + 3x^(- 1)
f `(x) = 4 x ³ - 3x^(- 2)
f "(x) = 12 x ² + 6x^(- 3)
f "(x) = 12 x ² + 6 / x ³

2007-10-28 08:12:16 · answer #1 · answered by Como 7 · 0⤊ 0⤋

f(x) = x^4 + 3x^-1

f'(x) = 4x^3 - 3x^-2 *** 1st Derivative***

f''(x) = 13x^2 + 6x^-3
= 13x^2 + (6/x^2) ***2nd Derivative***

2007-10-24 09:42:54 · answer #2 · answered by bigbaddom1989 3 · 0⤊ 0⤋