Express the area under the parametric curve given by the following equations as an integral:
x = 3 + e^(-t)
y = t^4 + 3t + sin(t),
0 ≤ t ≤ 1.
∫(t^4 + 3t + sin(t))(3 + e^(-t))dt
∫(4t^3 + 3 + cos(t))(3 + e^(-t))dt
Find the arc length of the parametric curve (astroid) given by the equations x = cos^3(t), y = sin^3(t) for 0 ≤ t ≤ 2̴̵̶̷̸̡̢̧̨̛̖̗̘̙̜̝̞̟̠̣̤̥̦̩̪̫̬̭̮̯̰̱̲̳̹̺̻̼͇͈͉͍͎̃̀́̂̃̄̅̆̇̈̉̊̋̌̍̎̏̐̑̒̓̔̽̾̿̀́͂̓̈́͆͊͋͌̕̚ͅ͏͓͔͕͖͙͚͐͑͒͗͛ͣͤͥͦͧͨͩͪͫͬͭͮͯ͘͜͟͢͝͞͠͡ͰͱͲͳʹ͵Ͷͷͺͻͼͽ;Ϳ΄΅Ά·ΈΉΊΌΎΏΐΑΒΓΔΕΖΗΘΙΚΛΜΝΞΟΠ