Evaluate the line integral, where $ C $ is the given curve.

$ \displaystyle \int_C (x+ 2y) \, dx + x^2 \, dy $, $ C $ consists of line segments from $ (0, 0) $ to $ (2, 1) $ and from $ (2, 1) $ to $ (3, 0) $

$$

\frac{5}{2}

$$

Vector Calculus

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