All flashcards
Flashcard 1: What is the derivative dtdy for y(t)=t3−4t?
Answer: 3t2−4. Apply power rule: derivative of t3 is 3t2, derivative of −4t is −4.
Flashcard 2: Calculate dxdy for y(t)=5t−t2 and x(t)=t3.
Answer: 3t25−2t. Calculate: dtdy=5−2t and dtdx=3t2, so dxdy=3t25−2t.
Flashcard 3: What is dxdy for y(t)=et and x(t)=t2?
Answer: 2tet. Calculate: dtdy=et and dtdx=2t, so dxdy=2tet.
Flashcard 4: What is dtdx for x(t)=tan(t)?
Answer: sec2(t). The derivative of tan(t) with respect to t is sec2(t).
Flashcard 5: What is dtdy if y(t)=ln(t)?
Answer: t1. The derivative of ln(t) with respect to t is t1.
Flashcard 6: Identify dxdy for y(t)=t2+3t and x(t)=2t.
Answer: 22t+3. Calculate: dtdy=2t+3 and dtdx=2, so dxdy=22t+3.
Flashcard 7: Identify the formula for dxdy in terms of x(t) and y(t).
Answer: dxdy=dtdxdtdy. Use the chain rule to express the slope in terms of the parameter t.
Flashcard 8: Identify dtdx if x(t)=et.
Answer: et. The derivative of et with respect to t is et.
Flashcard 9: What is dxdy for y(t)=t2 and x(t)=t2?
Answer: 1. Since both functions are identical, dxdy=2t2t=1.
Flashcard 10: What is the derivative dtdy for y(t)=t2−5t+6?
Answer: 2t−5. Apply power rule: derivative of t2 is 2t, derivative of −5t is −5.
Flashcard 11: What is the expression for dxdy if y(t)=t3 and x(t)=t?
Answer: 3t2. Calculate: dtdy=3t2 and dtdx=1, so dxdy=3t2.
Flashcard 12: Find dtdx if x(t)=t3−4t2.
Answer: 3t2−8t. Apply power rule: derivative of t3 is 3t2, derivative of −4t2 is −8t.
Flashcard 13: State the second derivative formula in terms of t for x(t) and y(t).
Answer: dx2d2y=dtd(dxdy)⋅dtdx1. Alternative form of the second derivative formula using the reciprocal of dtdx.
Flashcard 14: Find dtdx for x(t)=2t2+3t.
Answer: 4t+3. Apply power rule: derivative of 2t2 is 4t, derivative of 3t is 3.
Flashcard 15: Find the expression for dxdy given y(t)=sin(t) and x(t)=cos(t).
Answer: −sin(t)cos(t). Calculate: dtdy=cos(t) and dtdx=−sin(t), so dxdy=−cot(t).
Flashcard 16: Identify dxdy if y(t)=et and x(t)=e−t.
Answer: −e2t. Calculate: dtdy=et and dtdx=−e−t, so dxdy=−e2t
Flashcard 17: What is dxdy for y(t)=tan(t) and x(t)=t?
Answer: sec2(t). Calculate: dtdy=sec2(t) and dtdx=1, so dxdy=sec2(t).
Flashcard 18: State the expression for dxdy if y(t)=cos(t) and x(t)=sin(t).
Answer: −cot(t). Same calculation as earlier: dxdy=−cot(t).
Flashcard 19: Calculate dxdy when y(t)=t2+1 and x(t)=3t.
Answer: 32t. Calculate: dtdy=2t and dtdx=3, so dxdy=32t.
Flashcard 20: State the formula for the second derivative in parametric form.
Answer: dx2d2y=dtdxdtd(dxdy). Apply the chain rule: differentiate dxdy with respect to t, then divide by dtdx.
Flashcard 21: Find dtdx if x(t)=t3−4t2.
Answer: 3t2−8t. Apply power rule: derivative of t3 is 3t2, derivative of −4t2 is −8t.
Flashcard 22: Identify dxdy for y(t)=t2+3t and x(t)=2t.
Answer: 22t+3. Calculate: dtdy=2t+3 and dtdx=2, so dxdy=22t+3.
Flashcard 23: What is dxdy for y(t)=t2 and x(t)=t2?
Answer: 1. Since both functions are identical, dxdy=2t2t=1.
Flashcard 24: What is the derivative dtdy for y(t)=t2−5t+6?
Answer: 2t−5. Apply power rule: derivative of t2 is 2t, derivative of −5t is −5.
Flashcard 25: What is the expression for dxdy if y(t)=t3 and x(t)=t?
Answer: 3t2. Calculate: dtdy=3t2 and dtdx=1, so dxdy=3t2.
Flashcard 26: What is dtdx for x(t)=tan(t)?
Answer: sec2(t). The derivative of tan(t) with respect to t is sec2(t).
Flashcard 27: What is dxdy for y(t)=et and x(t)=t2?
Answer: 2tet. Calculate: dtdy=et and dtdx=2t, so dxdy=2tet.
Flashcard 28: State the second derivative formula in terms of t for x(t) and y(t).
Answer: dx2d2y=dtd(dxdy)⋅dtdx1. Alternative form of the second derivative formula using the reciprocal of dtdx.
Flashcard 29: Find dtdx for x(t)=2t2+3t.
Answer: 4t+3. Apply power rule: derivative of 2t2 is 4t, derivative of 3t is 3.
Flashcard 30: Find the expression for dxdy given y(t)=sin(t) and x(t)=cos(t).
Answer: −sin(t)cos(t). Calculate: dtdy=cos(t) and dtdx=−sin(t), so dxdy=−cot(t).