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17-10-2017
Mathematics

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Help please!!!! How did they get the answer? Please show your work! Thank you!

Help please How did they get the answer Please show your work Thank you class=

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17-10-2017

7 ∫ cos(πx) dx
7 [ sin(πx)/π ]
7/π (sin(π/2) - sin(0))
7/π (1 - 0)
7/π ~ 7/3

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