SOLUTION: Pls help: {{{if y=x^4 - 7x^3 + 3 then (d^3 y/dx^3) at x=2 is }}}

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Question 969625: Pls help: if+y=x%5E4+-+7x%5E3+%2B+3++then+%28d%5E3+y%2Fdx%5E3%29+at+x=2+is+
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
First derivative is
4x^3 - 21x^2
Second derivative is
12x^2 - 42x
Third derivative is
24x-42
At x=2, it would be 48-42=6