# 7.4_MAT_266_ONLINE_B_Spring_2020.Section_7.4.pdf - Larena...

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Larena Whitney-krugBoernerMAT266ONLINEBSpring2020Assignment Section7.4 due 04/09/2020 at 11:59pm MST1.(1 point)Which of the following integrals represents the length of thecurvey=cos(x),0x2π?A.Z2π0q1-sin2(x)dxB.Z2π0q1+cos2(x)dxC.Z2π0p1+cos(x)dxD.Z2π0q1-cos2(x)dxE.Z2π0p1+sin(x)dxF.Z2π0q1+sin2(x)dxSolution:SOLUTIONL=Z2π0s1+dydx2dx=Z2π0q1+(-sin(x))2dx=Z2π0q1+sin2(x)dxTherefore the correct answer isFAnswer(s) submitted:F(correct)Correct Answers:F2.(1 point)
Which of the following integrals represents the length of thecurvex=y+y3,1y4?Z4q