Posted by Anonymous on Tuesday, March 5, 2013 at 10:57pm.
Evaluate the following line integral: ∮C[(4x^2+3x+5y)dx+(6x^2+5x+3y)dy] where C is the path around the square with vertices (0,0),(2,0),(2,2) and (0,2).

calculus  Damon, Wednesday, March 6, 2013 at 3:09am
from point 1 to point 2 dy = 0, y = 0 and x goes from 0 to 2
so integral one = ∮[(4x^2+3x)dx =(4/3)x^3 + (3/2)x^2 = 32/3+6 = 50/3
from point 2 to point 3, dx = 0 , x = 2 and y from 0 to 2
so integral 2 = ∮(34+3y)dy] from 0 to 2
similar for the last two lines, then add the results. Remember direction for example for integal 3 y does not change but x is from 2 to 0, not 0 to 2
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