8. Let C be a counterclocwise boundary of a tri- angle with vertices (0,0), (1,2) and...

 

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8. Let C be a counterclocwise boundary of a tri- angle with vertices (0,0), (1,2) and (0, 2). Using Green's theorem, calculate 4z ydz + 2dy. 9. Let C be a counterclockwise boundary of a square formed by the lines z = 0, = 2, y = 0 and y = 2. %3D %3D Using Green's theorem, calculate (z² - y)dr+2rydy. 8. Let C be a counterclocwise boundary of a tri- angle with vertices (0,0), (1,2) and (0, 2). Using Green's theorem, calculate 4z ydz + 2dy. 9. Let C be a counterclockwise boundary of a square formed by the lines z = 0, = 2, y = 0 and y = 2. %3D %3D Using Green's theorem, calculate (z² - y)dr+2rydy.