Step 1: Understanding the vector sum.
The sum of the three sides of a triangle taken in order gives a vector sum of zero, since the triangle is a closed figure.
Step 2: Conclusion.
Thus, the vector sum of the three sides of a triangle taken in order is zero.
If \( y = \sqrt{e^x} \), \( x > 0 \), then \( \frac{dy}{dx} = \underline{\hspace{2cm}} \)