Symbolic answers must be entered using notation similar to the examples given below. If you enter decimal numbers for questions that indicate that a svm bolic answer is required, it will be marked as zero, regardless of whether the decimal number is correct or not. Integer numbers (positive, negative, and 0} are allowed. Below are some examples. Example Math Expression How to Enter the Answer 3;5 infiniZy Problem #4: Use Green's Theorem to evaluate the following integral, [ (er + 2013) dx + (9y# - 20x3) dy where C is the curve that starts at the origin, and then goes along a straight line to the point (V6, V6), and then along the arc of the circle x- + 1 = 12 from the point (V6, V6) to the point (0, 213), and then along a straight line back to the origin. Enter your answer Problem #4: symbolically, as in these examples Just Save Submit Problem #4 for Grading Problem #4 Attempt #1 Attempt #2 Attempt #3 Attempt #4 Attempt #5 Your Answer: Your Mark: Problem #5: Find the work done by the force F = -Spi + 2x j along one loop of the curve r = sin 20 (in the positive direction). Enter your answer Problem #5: symbolically, as in these examples