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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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the product rule
if y = uv, where u and v are differentiable functions of x, then yā= uāv + uvā
derivative of the first times second, plus first times derivative of second
the quotient rule
if y = u/v, where u and v are differentiable functions, and v doesnāt = 0, then yā = (uāv = uvā)/vĀ²
the quotient rule rhyme
low d high, minus high d low, square the bottom, and away we go!
sināx
cosx
cosāx
-sinx
tanāx
secĀ²x
cotāx
-cscĀ²x
secāx
secx tanx
cscāx
-cscx cotx
tanx
sinx/cosx
cotx
cosx/sinx
secx
1/cosx
cscx
1/sinx
sinĀ²x + cosĀ²x =
1
1 + cotĀ²x =
cscĀ²x
tanĀ²x + 1 =
secĀ²x
derivative of the inverse function
if y = fā»Ā¹(x), then d/dx (f-1(x)) =
1/ (fā(fā»Ā¹(x))
d/dx (sin-1x)
1/ā1-xĀ²
d/dx (cos-1x)
-1/ā1-xĀ²
d/dx (tan-1x)
1/1+xĀ²
d/dx (cot-1x)
-1/1+xĀ²
d/dx (sec-1x)
1/|x|āxĀ²-1
d/dx (csc-1x)
-1/|x|āxĀ²-1
if a function f is differentiable at a point x=c, then
f is continuous at x=c
if a function f is not continuous
it is not differentiable
related rates
D.R.E.D.S.