The function f(x) = 2x³ + 9.48x² +92.8872x - 0.89 is increasing on the open interval ( It is decreasing on the open interval (-∞, The function has a local maximum at I ) and the open interval ( 2 ∞ ).

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A: Differentiation

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A: r(t)=3t2k/2

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A: Yes there is a mistake in k integration, i correct this, please check answer

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Q: Find the volume of the regions bound by x = y^2 and x = 1 - y^2 rotated about x = 3.

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A: r(t)=,t=1