Suppose that z = f(x, y) and that both x and y are functions of a single variable t such that ∇f(x, y) = x 2 , y 2 i and dx dt = dy dt = t 2 − 4. For what values of t in the interval [0,[infinity]) is z increasing

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times both sides by 2, times () by 8, add alile terms, move terms, add alike and caculate divide both sides by 3

answer: need a picture

step-by-step explanation:

sweetheart, there isn't a cube below.

in total they made   333.74 your welcome : d