태그 보관물: 곡선

그림참조   마지막 적분을 울프램알파로 계산하면 http://www.wolframalpha.com/input/?i=integrate%5B1%2Fsin+x%2C+%7Bx%2C+pi%2F3%2C+2pi%2F3%7D%5D

r^2 = a^2 cos θ 넓이 계산  http://www.mathalino.com/reviewer/integral-calculus/example-2-plane-areas-in-polar-coordinates http://www-history.mcs.st-andrews.ac.uk/history/Curves/Lemniscate.html http://curvebank.calstatela.edu/lemniscate/lemniscate.htm http://mathworld.wolfram.com/Lemniscate.html

그림