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Mathematics, 05.04.2021 15:30 Mlpgirl233

Someone please Fully explain: a) i) Find $\int{(3-x+\frac{1}{x^{3} }) } \, dx$
ii) Hence evaluate $\int\limits^2_1 {(3-x+\frac{1}{x^{3} } )} \, dx$
b) i) Find $\int{6sin 3x} \, dx$
ii) Hence evaluate $\int\limits^\frac{\pi }{6} _\frac{\pi}{9} {6sin3x} \, dx$

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