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47 Cards in this Set
- Front
- Back
even function
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f(x) = f(-x) symmetric with respect to y axis.
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odd function
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f(-x) = -f(x)
symmetric with respect to origin |
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Rational Function
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ratio of two polynomials P(x) / Q (x)
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f(x) + c
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shift vertically
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f(x) - c
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shift downward
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f(x-c)
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shift c units right
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f(x+c)
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shift c units left
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cf(x)
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stretch graph vertically by factor c
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1/c f(x)
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compress graph vertically by factor c
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f(x/c)
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stretch graph horizontally by factor c
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-f(x)
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reflect graph about x-axis
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f(-x)
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reflect graph about y axis
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Limit 1 definition
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the limit of f(x), as x approaches a, equals L
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lim sin x / x as x > 0
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1
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lim pie / x as x >0
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does not exist
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Precise definition of a limit
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for every e>0 there is a corresponding d>0 such that if 0<I x-a I < d then I f(x) - LI < e
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Lim cf(x)
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c lim f(x)
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lim (f(x) ^n
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(lim f(x) ^n
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lim c
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c
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lim x as x >a
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a
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lim x^n as x > a
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a^n
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lim sqaure root x as x approaches a
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square root of a
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lim cos phi as phi >0
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0
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limit sin phi as phi > 0
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0
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lim sin as phi >a
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sin a
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lim cos as phi > a
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cos a
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limit sin (1/x) as x > 0
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does not exist
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limit sin x / x
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1
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limit sin phi / phi
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1
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continuity definition of limit
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lim f(x) as x >a = f(a)
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if f and g are continuous at a and c is a constant then the following functions are also continuous
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f +g f-g fg f/g cf
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functions continuous at every number in their domains
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polynomials, rational functions, root functions, trigonometric functions
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theorem 7
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if f is continuous at b and lim g (x) - b then lim f(g(x) = f(b)
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theorem 8
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if g is continuous at a and f is continuous at g(a) then the composite function f o g given by (fog) (x) = f(g(x) is continuous at a
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intermediate value theorem
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f is continuous on closed interval (a,b) and N is any number between f(a) and f(b) there there exits a number c in (a,b) such that f(c) = N
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limit x / x -a
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positive infinity from right negative from left
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limit tan x as x > pie/2
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infinity from left positive from right negative
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limit x2-1 / x2+1
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1 limit at infinity will approach fraction of x coefficients
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limit 1/x^n as x > infinity
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0
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limit sin 1/x as x > infinity
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0
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Infinite Limits Precise Definition
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let f be a function defined on some open interval that contains the number a, then lim f(x) x>a = postive infinity for every postive number M there is a postive number d such that if 0< Ix -aI<e then f(x)>M
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lim 1/ sin x as x approaches pie/2
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from left postive infinity from right negative infinity
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derivative of ln x
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1/x
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derivative csc x
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-csc x cotx
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f' sec x
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sec x tanx
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f' tan x
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sec^2x
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f' cot x
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-csc2x
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