find the values of t when the function defined by

X=4t^3 and y=3t^2-7t is concave up.

give and derivative you need to find when solving this problem .

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- July 3rd 2012, 12:47 AMDaminiyear 13 differentiation - please help me
find the values of t when the function defined by

X=4t^3 and y=3t^2-7t is concave up.

**give and derivative you need to find when solving this problem .** - July 3rd 2012, 02:44 AMtom@ballooncalculusRe: year 13 differentiation - please help me
Differentiate twice with respect to x, as directed here: Parametric derivative - Wikipedia, the free encyclopedia.

Set the second derivative greater than zero and solve for values of t. - July 3rd 2012, 02:53 AMbiffboyRe: year 13 differentiation - please help me