s883
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Homework Statement
Could anyone explain me how to solve this?
Homework Equations
f(x) =
1/x2 + 4x + 9 + x4 , f’”’(-2) =
Finding the third derivative of f(x) = 1/x² + 4x + 9 + x⁴
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Could anyone explain me how to solve this?
f(x) =
1/x2 + 4x + 9 + x4 , f’”’(-2) =
Discussion
Saladsamurai
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Hello s883! 
It means to take the 4th derivative of the given function f(x) and then evaluate the resulting expression at x = -2. And I would probably put calculus questions in the calculus forum for next time 
It means to take the 4th derivative of the given function f(x) and then evaluate the resulting expression at x = -2. And I would probably put calculus questions in the calculus forum for next time
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Homework Helper
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I assume you mean [itex]f(x) = 1/x^2 + 4x + 9 + x^4= x^{-2}+ 4x+ 9+ x^4[/itex].
Can you find f'(x) using the "power rule" ([itex](x^n)'= n x^{n-1}[/itex])?
What about f'' and f'''?
Now do f''''.
Can you find f'(x) using the "power rule" ([itex](x^n)'= n x^{n-1}[/itex])?
What about f'' and f'''?
Now do f''''.