1.

The expression for arc length in parametric form is_________________

A. \(ds = \int_a^b xy \sqrt{(\frac{dx}{dt})^2 + (\frac{dy}{dt})^2} \,ds \)
B. \(ds = \int_a^b \sqrt{(\frac{dx}{dt})^2 + (\frac{dy}{dt})^2} \,dt \)
C. \(ds = \int_a^b \sqrt{(\frac{dx}{dt})^2 + (\frac{dy}{dt})^2} \,dx \)
D. \(ds = \int_a^b \sqrt{(\frac{dx}{dt})^2 + (\frac{dy}{dt})^2} \)
Answer» C. \(ds = \int_a^b \sqrt{(\frac{dx}{dt})^2 + (\frac{dy}{dt})^2} \,dx \)


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