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AP Calculus BC Flashcards: Second Derivatives Of Parametric Equations

Study Second Derivatives Of Parametric Equations in AP Calculus BC with focused flashcards that help you recognize the idea, recall the key rule, and apply it in practice-style prompts.

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What this deck covers

This deck focuses on Second Derivatives Of Parametric Equations, giving you a quick way to review the definitions, rules, and examples that matter most for AP Calculus BC.

How to use these flashcards

Work through these flashcards in short sessions. Try to answer each prompt before flipping the card, then revisit any cards you miss until the explanation feels automatic.

AP Calculus BC Flashcards: Second Derivatives Of Parametric Equations

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QUESTION

What is the derivative dydt\frac{dy}{dt}dtdy​ for y(t)=t3−4ty(t) = t^3 - 4ty(t)=t3−4t?

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ANSWER

3t2−43t^2 - 43t2−4. Apply power rule: derivative of t3t^3t3 is 3t23t^23t2, derivative of −4t-4t−4t is −4-4−4.

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Flashcard 1: What is the derivative dydt\frac{dy}{dt}dtdy​ for y(t)=t3−4ty(t) = t^3 - 4ty(t)=t3−4t?

Answer: 3t2−43t^2 - 43t2−4. Apply power rule: derivative of t3t^3t3 is 3t23t^23t2, derivative of −4t-4t−4t is −4-4−4.

Flashcard 2: Calculate dydx\frac{dy}{dx}dxdy​ for y(t)=5t−t2y(t) = 5t - t^2y(t)=5t−t2 and x(t)=t3x(t) = t^3x(t)=t3.

Answer: 5−2t3t2\frac{5 - 2t}{3t^2}3t25−2t​. Calculate: dydt=5−2t\frac{dy}{dt} = 5-2tdtdy​=5−2t and dxdt=3t2\frac{dx}{dt} = 3t^2dtdx​=3t2, so dydx=5−2t3t2\frac{dy}{dx} = \frac{5-2t}{3t^2}dxdy​=3t25−2t​.

Flashcard 3: What is dydx\frac{dy}{dx}dxdy​ for y(t)=ety(t) = e^ty(t)=et and x(t)=t2x(t) = t^2x(t)=t2?

Answer: et2t\frac{e^t}{2t}2tet​. Calculate: dydt=et\frac{dy}{dt} = e^tdtdy​=et and dxdt=2t\frac{dx}{dt} = 2tdtdx​=2t, so dydx=et2t\frac{dy}{dx} = \frac{e^t}{2t}dxdy​=2tet​.

Flashcard 4: What is dxdt\frac{dx}{dt}dtdx​ for x(t)=tan⁡(t)x(t) = \tan(t)x(t)=tan(t)?

Answer: sec⁡2(t)\sec^2(t)sec2(t). The derivative of tan⁡(t)\tan(t)tan(t) with respect to ttt is sec⁡2(t)\sec^2(t)sec2(t).

Flashcard 5: What is dydt\frac{dy}{dt}dtdy​ if y(t)=ln⁡(t)y(t) = \ln(t)y(t)=ln(t)?

Answer: 1t\frac{1}{t}t1​. The derivative of ln⁡(t)\ln(t)ln(t) with respect to ttt is 1t\frac{1}{t}t1​.

Flashcard 6: Identify dydx\frac{dy}{dx}dxdy​ for y(t)=t2+3ty(t) = t^2 + 3ty(t)=t2+3t and x(t)=2tx(t) = 2tx(t)=2t.

Answer: 2t+32\frac{2t + 3}{2}22t+3​. Calculate: dydt=2t+3\frac{dy}{dt} = 2t+3dtdy​=2t+3 and dxdt=2\frac{dx}{dt} = 2dtdx​=2, so dydx=2t+32\frac{dy}{dx} = \frac{2t+3}{2}dxdy​=22t+3​.

Flashcard 7: Identify the formula for dydx\frac{dy}{dx}dxdy​ in terms of x(t)x(t)x(t) and y(t)y(t)y(t).

Answer: dydx=dydtdxdt\frac{dy}{dx} = \frac{\frac{dy}{dt}}{\frac{dx}{dt}}dxdy​=dtdx​dtdy​​. Use the chain rule to express the slope in terms of the parameter ttt.

Flashcard 8: Identify dxdt\frac{dx}{dt}dtdx​ if x(t)=etx(t) = e^tx(t)=et.

Answer: ete^tet. The derivative of ete^tet with respect to ttt is ete^tet.

Flashcard 9: What is dydx\frac{dy}{dx}dxdy​ for y(t)=t2y(t) = t^2y(t)=t2 and x(t)=t2x(t) = t^2x(t)=t2?

Answer: 111. Since both functions are identical, dydx=2t2t=1\frac{dy}{dx} = \frac{2t}{2t} = 1dxdy​=2t2t​=1.

Flashcard 10: What is the derivative dydt\frac{dy}{dt}dtdy​ for y(t)=t2−5t+6y(t) = t^2 - 5t + 6y(t)=t2−5t+6?

Answer: 2t−52t - 52t−5. Apply power rule: derivative of t2t^2t2 is 2t2t2t, derivative of −5t-5t−5t is −5-5−5.

Flashcard 11: What is the expression for dydx\frac{dy}{dx}dxdy​ if y(t)=t3y(t) = t^3y(t)=t3 and x(t)=tx(t) = tx(t)=t?

Answer: 3t23t^23t2. Calculate: dydt=3t2\frac{dy}{dt} = 3t^2dtdy​=3t2 and dxdt=1\frac{dx}{dt} = 1dtdx​=1, so dydx=3t2\frac{dy}{dx} = 3t^2dxdy​=3t2.

Flashcard 12: Find dxdt\frac{dx}{dt}dtdx​ if x(t)=t3−4t2x(t) = t^3 - 4t^2x(t)=t3−4t2.

Answer: 3t2−8t3t^2 - 8t3t2−8t. Apply power rule: derivative of t3t^3t3 is 3t23t^23t2, derivative of −4t2-4t^2−4t2 is −8t-8t−8t.

Flashcard 13: State the second derivative formula in terms of ttt for x(t)x(t)x(t) and y(t)y(t)y(t).

Answer: d2ydx2=ddt(dydx)⋅1dxdt\frac{d^2y}{dx^2} = \frac{d}{dt}(\frac{dy}{dx}) \cdot \frac{1}{\frac{dx}{dt}}dx2d2y​=dtd​(dxdy​)⋅dtdx​1​. Alternative form of the second derivative formula using the reciprocal of dxdt\frac{dx}{dt}dtdx​.

Flashcard 14: Find dxdt\frac{dx}{dt}dtdx​ for x(t)=2t2+3tx(t) = 2t^2 + 3tx(t)=2t2+3t.

Answer: 4t+34t + 34t+3. Apply power rule: derivative of 2t22t^22t2 is 4t4t4t, derivative of 3t3t3t is 333.

Flashcard 15: Find the expression for dydx\frac{dy}{dx}dxdy​ given y(t)=sin⁡(t)y(t) = \sin(t)y(t)=sin(t) and x(t)=cos⁡(t)x(t) = \cos(t)x(t)=cos(t).

Answer: −cos⁡(t)sin⁡(t)-\frac{\cos(t)}{\sin(t)}−sin(t)cos(t)​. Calculate: dydt=cos⁡(t)\frac{dy}{dt} = \cos(t)dtdy​=cos(t) and dxdt=−sin⁡(t)\frac{dx}{dt} = -\sin(t)dtdx​=−sin(t), so dydx=−cot⁡(t)\frac{dy}{dx} = -\cot(t)dxdy​=−cot(t).

Flashcard 16: Identify dydx\frac{dy}{dx}dxdy​ if y(t)=ety(t) = e^ty(t)=et and x(t)=e−tx(t) = e^{-t}x(t)=e−t.

Answer: −e2t-e^{2t}−e2t. Calculate: dydt=et\frac{dy}{dt} = e^tdtdy​=et and dxdt=−e−t\frac{dx}{dt} = -e^{-t}dtdx​=−e−t, so dydx=−e2t\frac{dy}{dx} = -e^{2t}dxdy​=−e2t

Flashcard 17: What is dydx\frac{dy}{dx}dxdy​ for y(t)=tan⁡(t)y(t) = \tan(t)y(t)=tan(t) and x(t)=tx(t) = tx(t)=t?

Answer: sec⁡2(t)\sec^2(t)sec2(t). Calculate: dydt=sec⁡2(t)\frac{dy}{dt} = \sec^2(t)dtdy​=sec2(t) and dxdt=1\frac{dx}{dt} = 1dtdx​=1, so dydx=sec⁡2(t)\frac{dy}{dx} = \sec^2(t)dxdy​=sec2(t).

Flashcard 18: State the expression for dydx\frac{dy}{dx}dxdy​ if y(t)=cos⁡(t)y(t) = \cos(t)y(t)=cos(t) and x(t)=sin⁡(t)x(t) = \sin(t)x(t)=sin(t).

Answer: −cot⁡(t)-\cot(t)−cot(t). Same calculation as earlier: dydx=−cot⁡(t)\frac{dy}{dx} = -\cot(t)dxdy​=−cot(t).

Flashcard 19: Calculate dydx\frac{dy}{dx}dxdy​ when y(t)=t2+1y(t) = t^2 + 1y(t)=t2+1 and x(t)=3tx(t) = 3tx(t)=3t.

Answer: 2t3\frac{2t}{3}32t​. Calculate: dydt=2t\frac{dy}{dt} = 2tdtdy​=2t and dxdt=3\frac{dx}{dt} = 3dtdx​=3, so dydx=2t3\frac{dy}{dx} = \frac{2t}{3}dxdy​=32t​.

Flashcard 20: State the formula for the second derivative in parametric form.

Answer: d2ydx2=ddt(dydx)dxdt\frac{d^2y}{dx^2} = \frac{\frac{d}{dt}(\frac{dy}{dx})}{\frac{dx}{dt}}dx2d2y​=dtdx​dtd​(dxdy​)​. Apply the chain rule: differentiate dydx\frac{dy}{dx}dxdy​ with respect to ttt, then divide by dxdt\frac{dx}{dt}dtdx​.

Flashcard 21: Find dxdt\frac{dx}{dt}dtdx​ if x(t)=t3−4t2x(t) = t^3 - 4t^2x(t)=t3−4t2.

Answer: 3t2−8t3t^2 - 8t3t2−8t. Apply power rule: derivative of t3t^3t3 is 3t23t^23t2, derivative of −4t2-4t^2−4t2 is −8t-8t−8t.

Flashcard 22: Identify dydx\frac{dy}{dx}dxdy​ for y(t)=t2+3ty(t) = t^2 + 3ty(t)=t2+3t and x(t)=2tx(t) = 2tx(t)=2t.

Answer: 2t+32\frac{2t + 3}{2}22t+3​. Calculate: dydt=2t+3\frac{dy}{dt} = 2t+3dtdy​=2t+3 and dxdt=2\frac{dx}{dt} = 2dtdx​=2, so dydx=2t+32\frac{dy}{dx} = \frac{2t+3}{2}dxdy​=22t+3​.

Flashcard 23: What is dydx\frac{dy}{dx}dxdy​ for y(t)=t2y(t) = t^2y(t)=t2 and x(t)=t2x(t) = t^2x(t)=t2?

Answer: 111. Since both functions are identical, dydx=2t2t=1\frac{dy}{dx} = \frac{2t}{2t} = 1dxdy​=2t2t​=1.

Flashcard 24: What is the derivative dydt\frac{dy}{dt}dtdy​ for y(t)=t2−5t+6y(t) = t^2 - 5t + 6y(t)=t2−5t+6?

Answer: 2t−52t - 52t−5. Apply power rule: derivative of t2t^2t2 is 2t2t2t, derivative of −5t-5t−5t is −5-5−5.

Flashcard 25: What is the expression for dydx\frac{dy}{dx}dxdy​ if y(t)=t3y(t) = t^3y(t)=t3 and x(t)=tx(t) = tx(t)=t?

Answer: 3t23t^23t2. Calculate: dydt=3t2\frac{dy}{dt} = 3t^2dtdy​=3t2 and dxdt=1\frac{dx}{dt} = 1dtdx​=1, so dydx=3t2\frac{dy}{dx} = 3t^2dxdy​=3t2.

Flashcard 26: What is dxdt\frac{dx}{dt}dtdx​ for x(t)=tan⁡(t)x(t) = \tan(t)x(t)=tan(t)?

Answer: sec⁡2(t)\sec^2(t)sec2(t). The derivative of tan⁡(t)\tan(t)tan(t) with respect to ttt is sec⁡2(t)\sec^2(t)sec2(t).

Flashcard 27: What is dydx\frac{dy}{dx}dxdy​ for y(t)=ety(t) = e^ty(t)=et and x(t)=t2x(t) = t^2x(t)=t2?

Answer: et2t\frac{e^t}{2t}2tet​. Calculate: dydt=et\frac{dy}{dt} = e^tdtdy​=et and dxdt=2t\frac{dx}{dt} = 2tdtdx​=2t, so dydx=et2t\frac{dy}{dx} = \frac{e^t}{2t}dxdy​=2tet​.

Flashcard 28: State the second derivative formula in terms of ttt for x(t)x(t)x(t) and y(t)y(t)y(t).

Answer: d2ydx2=ddt(dydx)⋅1dxdt\frac{d^2y}{dx^2} = \frac{d}{dt}(\frac{dy}{dx}) \cdot \frac{1}{\frac{dx}{dt}}dx2d2y​=dtd​(dxdy​)⋅dtdx​1​. Alternative form of the second derivative formula using the reciprocal of dxdt\frac{dx}{dt}dtdx​.

Flashcard 29: Find dxdt\frac{dx}{dt}dtdx​ for x(t)=2t2+3tx(t) = 2t^2 + 3tx(t)=2t2+3t.

Answer: 4t+34t + 34t+3. Apply power rule: derivative of 2t22t^22t2 is 4t4t4t, derivative of 3t3t3t is 333.

Flashcard 30: Find the expression for dydx\frac{dy}{dx}dxdy​ given y(t)=sin⁡(t)y(t) = \sin(t)y(t)=sin(t) and x(t)=cos⁡(t)x(t) = \cos(t)x(t)=cos(t).

Answer: −cos⁡(t)sin⁡(t)-\frac{\cos(t)}{\sin(t)}−sin(t)cos(t)​. Calculate: dydt=cos⁡(t)\frac{dy}{dt} = \cos(t)dtdy​=cos(t) and dxdt=−sin⁡(t)\frac{dx}{dt} = -\sin(t)dtdx​=−sin(t), so dydx=−cot⁡(t)\frac{dy}{dx} = -\cot(t)dxdy​=−cot(t).