Let and for . State the interval(s) of on which the curve is concave…

MATHEMATICS · Subjective · AP · Calculus BC · Parametric, Polar, and Vector-Valued Functions · Parametric, Polar, and Vector-Valued Functions

Problem

Let

x(t)=2+\cos t

and

y(t)=\sin t

for

0<t<2\pi

. State the interval(s) of

t

on which the curve is concave down.