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37 Cards in this Set
- Front
- Back
Kth term test
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Lim as k -> Infinity of a-subk != 0 then summation of a-subk diverges
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Integral Test
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integral from 1 to infinity of f(x)dx and sum from k=1 to infinity of a-subk either both converge or both diverge
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Basic comparison test (BCT)
(0<=a-subk<=b-subk for all values of k) |
if sum of b-subk converges then sum of a-subk converges
if sum of a-subk diverges then sum of b-subk diverges |
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Limit Comparison Test (LCT)
a-subk and b-subk are always positive |
limit as k -> infinity of (a-subk)/(b-subk) = L
where L>0 the two series either both converge or both diverge |
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Alternating Series Test (AST)
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a-subk > 0 for all values of k and a-subk is decreasing sequence and limit as k -> infinity of a-subk = 0 then sum of (-1)^(5+1) x a-subk converges
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AbSolute Convergence Test (ACT)
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sum of abs(a-subk) converges then the sum of a-subk converges absolutely
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Ratio Test
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Sum of a-subk has no zero terms
limit as k -> infinity of abs((a-subk+1)/(a-subk)) = L L<1 converge absolutely L>1 series diverges L=1 no conclusion try another method |
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Root Test
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Sum of a-subk is a series so that limit as k-> infinity of kth root(abs(a-subk)) = L
L<1 converge absolutely L>1 series diverges L=1 no conclusion try another method |
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half angle formula
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(sinx)^2 = 1/2(1-cos2x)
(cosx)^2 = 1/2(1+cos2x) (sin2x)^2 = 1/2(1-cos4x) (cos2x)^2 = 1/2(1+cos4x) (sin3x)^2 = 1/2(1-cos6x) (cos3x)^2 = 1/2(1+cos6x) |
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integral of sinx
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-cosx + C
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integral of cosx
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sinx + c
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integral of secx
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ln|secx + tanx| + c
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integral of tanx
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ln|secx| + c
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integral of secxtanx
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secx + c
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integral of (secx)^2
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tanx + c
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sin(theta)
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opp/hyp
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cos(theta)
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adj/hyp
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tan(theta)
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opp/adj
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Arc Length
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integral a to b of root(1+(f-prime(x))^2) is the length of x on the interval [a,b]
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Arc length steps
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1 find derivative of the function
2 apply to arc length formula 3 substitute trig values for x values 4 solve for the integral 5 substitute x values back in and solve |
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integral cscx
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ln|cscx - cotx| + c
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integral cotx
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-ln|cscsx| + c
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integral cscxcotx
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-cscsx + c
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integral (cscx)^2
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-cotx + c
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integral of 2^x
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(2^x)/ln2 + c
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when there's addition in the numerator split it up. integral of (2x+5)/x^2+1
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becomes integral of (2x)/x^2 + 1 dx + integral of 5/x^2 + 1 dx
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integral of 1/sqrt(a^2 - x^2)
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(sinx)^-1
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integral of 1/(x^2 + a^2)
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(tanx)^-1
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integral of 1/sqrt(x^2 - a^2)
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(1/a)(sec(x/a))^-1
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integration by parts
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u v - integral of v du
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trig sub
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sqrt(a^2 - x^2) means x = asin(theta)
sqrt(x^2 + a^2) means x = atan(theta) sqrt(x^2 - a^2) means x = asec(theta) |
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area under the curve
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A = integral from a to b of f(x) - g(x) dx
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Geometric Series Test
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sum of (r)^k as k -> infinity = a/(1-r)
if r <1 converge else diverge |
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harmonic series
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always diverges
1/k |
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p series
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1/k^p
p<= 1 diverge p > 1 converge |
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MaClaurin Series
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lim k -> infinity of |(a-sub(k-1))/a-subk|
replace values of k with k + 1 lim n -> infinity of x^n/n! can be used to set up a MaClaurin Series |
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integral of g-prime(x)/g(x)
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ln(g(x))
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