6. Evaluate4tan³xdx. (A) 2 - ln 2 (B) 2 + ln 2 (C) 2(1 - ln 2) (D) 2(1 + ln 2) (E) 4(1 + ln 2)

6. Evaluate4tan³xdx.
(A) 2 - ln 2
(B) 2 + ln 2
(C) 2(1 - ln 2)
(D) 2(1 + ln 2)
(E) 4(1 + ln 2)

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1. The rate of depreciation of a machine is inversely proportional to the square of t + 2, where V is the value of the machine t years after it was purchased. The initial value of the machine was $500,000, and its value decreased $100,000 in the first year. Estimate its value after 6 years. Round your answer to the nearest integer. (A) $500,000 (B) $275,000 (C) $550,000 (D) $475,000 (E) $350,000

6. Evaluate4tan³xdx.
(A) 2 - ln 2
(B) 2 + ln 2
(C) 2(1 - ln 2)
(D) 2(1 + ln 2)
(E) 4(1 + ln 2)

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