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Mathematics 8 Online
OpenStudy (anonymous):

1) Find an equation of the tangent plane to the given surface at the specified point. z = 4(x − 1)^2 + 6(y + 3)^2 + 4, (3, −2, 26) I got z=8x-24y+30 ?? 2) Use differentials to estimate the amount of tin in a closed tin can with diameter 10 cm and height 15 cm if the tin is 0.04 cm thick. (Round your answer to two decimal places.) _____________ cm3 I got 28.90 cm^3 ???

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