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Find dy/dx and d^2y/dx^2. For which worths of t is the curve concave upward? 0 votesFind dy/dx and d^2y/dx^2. For which worths of t is the curve concave upward?x = 2 sin t, y = 3 cos t, 0 parametric-equationsfirst-and-second-derivativesconcave-upwardaskedFeb 2, 2015in CALCULUSby anonymous

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**Step 1:**

The curve is

and also .You are watching: For which values of t is the curve concave upward?

Consider

.Differentiate through respect to

.Consider

Differentiate v respect to

.Find

.Find

.**Step 2:**

Consider

.For concave upwards

Multiplying by an adverse sign will certainly reverse the inequality.

Secant value is an unfavorable in 2nd and third quadrant the is

.Hence, the curve is concave upwards in

.See more: Remedios Caseros Para El Mareo O Vertigo, Remedios Caseros Para El Vértigo

**Solution:**

The curve is concave upwards in

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