微分積分演習問題　wLec 11 2019/12/18

(1) $\int^1_0 e^{-2t}dt$, (2) $\int^{\frac {\pi}2}_0 \sin tdt$, (2) $\int^{\frac {\pi}2}_0 \sin 2tdt$, (3) $\int^2_1 \frac 1{x^3}dx$, (4) $\int^8_1 x^{\frac 13}dx$, (5) $\int^2_1 (x-1)^4dx$, (6) $\int^2_1 \frac 1{2x+1}dx$

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