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Here is a link to the question:MATH 141 For which values of t is the curve concave upward? (Enter your answer using interval notation.)?

Consider the following.

x = t^3 − 12t, y = t^2 − 6

(a) Find

dy/dx and d^2y/dx^2

(b) For which values of t is the curve concave upward? (Enter your answer using interval notation.)

t = _____________

MATH 141 For which values of t is the curve concave upward? (Enter your answer using interval notation.)? - Yahoo! Answers

I have posted a link there to this topic so the OP can find my response.