Find the derivative of the vector function r(t) tax (b + tc), where a = (2, -5,-2), b = (4, 2,-5), and c = (3,-2,-2). r' (t) = (

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A: See this solution in below.

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A: Given data÷ Find the derivative of vector function.

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A: we know Domain of lnX=(x;  x>0 )

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Q: estimated

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