Chapter 4: Products, Quotients, and Parametric Functions

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Contains vocabulary and concepts from Chapter 4 of Calculus: Concepts and Applications by Paul A. Foerster as taught by Colin Suehring at McFarland High School

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26 Terms

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the product rule

if y = uv, where u and v are differentiable functions of x, then yā€™= uā€™v + uvā€™

derivative of the first times second, plus first times derivative of second

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the quotient rule

if y = u/v, where u and v are differentiable functions, and v doesnā€™t = 0, then yā€™ = (uā€™v = uvā€™)/vĀ²

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the quotient rule rhyme

low d high, minus high d low, square the bottom, and away we go!

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sinā€™x

cosx

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cosā€™x

-sinx

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tanā€™x

secĀ²x

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cotā€™x

-cscĀ²x

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secā€™x

secx tanx

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cscā€™x

-cscx cotx

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tanx

sinx/cosx

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cotx

cosx/sinx

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secx

1/cosx

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cscx

1/sinx

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sinĀ²x + cosĀ²x =

1

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1 + cotĀ²x =

cscĀ²x

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tanĀ²x + 1 =

secĀ²x

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derivative of the inverse function

if y = fā»Ā¹(x), then d/dx (f-1(x)) =

1/ (fā€™(fā»Ā¹(x))

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d/dx (sin-1x)

1/āˆš1-xĀ²

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d/dx (cos-1x)

-1/āˆš1-xĀ²

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d/dx (tan-1x)

1/1+xĀ²

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d/dx (cot-1x)

-1/1+xĀ²

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d/dx (sec-1x)

1/|x|āˆšxĀ²-1

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d/dx (csc-1x)

-1/|x|āˆšxĀ²-1

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if a function f is differentiable at a point x=c, then

f is continuous at x=c

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if a function f is not continuous

it is not differentiable

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