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Calculus BC
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Cards (65)
lim as x aprroaches a of
f(x)
= 0/0 or ∞/∞, then
limit as x⟶a
f(x)/
g(x)
= limit as x⟶a f'(x)/g'(x)
(
l'Hopital's Rule)
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dy
/dx of a parametric equation is
(
dy/dt
)/(
dx/dt
)
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Integration
by Parts
∫udv= uv-∫vdu
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When
using Euler's method, to find the new y
old
y + dy/dx •
∆x
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Area
of a
polar curve
∫(1/2)• r^2 dΘ
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slope
of a polar curve
derivative of (r(Θ)
•sinΘ
)/(r(Θ)
•cosΘ
)
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sin^2(x) + cos^2(x)=
1
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Maclaurin series for e^x
1 + x + (x^2)/2! + (x^3)/3! + ...
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Maclaurin
series for cosx
1 - (x^2)/2! + (x^4)/4! -...
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Maclaurin
series for sinx
x - (
x^3
)/3! + (
x^5
)/5! - ...
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Maclaurin
series for 1/(1-x)
1 +
x
+
x
^2 + x^3 + ...
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What do you do when using Ratio Test?
replace n with n+1 in the series, then multiply that by 1/original series. Simplify. To find the radius of convergence : final answer<1
-If you make final answer(L) >1 this tells you where the series diverges
-If you make the final answer(L)=1 you can gather nothing from this
-always check endpoints to figure out if it is < or ≤
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Taylor series format
f(x)= f(a) + f'(a)(x-a) + (f"(a)(x-a)^2)/2!+...+(f^n(a)(x-a)^n)/n!
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How to find the
Alternating Series
Error
Bound
The error bound is the next number in the series. For example if the second degree of the series is 1-x^2/2!, the error would be the
following number
, which is x^4/4!
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Lagrange Error
Bound
|f(x)-Pn(x)|≤
M
/(n+
1
!) • |x-c|^n+1
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What
conditions must be met to have a max or min?
dy/dx =
0
at that point and also dy/dx must change sign at that point. Remember to also check
endpoints
!
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What
conditions must be met to have a point of inflection?
d2y/dx2
=0 at that point and d2y/dx2 must
change
sign at that point.
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When a question asks for the maximum
value
of a function what do they want?
The y
value
, not the x value!
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derivative
of x^n
nx^
n-1
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derivative of
sinx
cosx
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derivative
of cosx
-sinx
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derivative
of tanx
(
secx
)^
2
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derivative
of cotx
-
(cscx)^2
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derivative
of sec x
secxtanx
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derivative
of cscx
-cscxcotx
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derivative
of lnu
(1/u) •
du
/
dx
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derivative
of e^u
(e^u) • du/dx
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derivative
of
inverse sin
u
(1/√(1-x^2)) •
derivative
of
u
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derivative
of inverse cos u
(
-1/√(1-x^2)
) • derivative of u
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derivative
if
inverse tan u
(1/(1+x^2)) •
derivative
of u
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derivative
of inverse cot u
(
-1
/(
1+x^2
)) • derivative of u
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derivative
of
inverse sec u
(1/|x|•√(x^2-1)) •
derivative
of u
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derivative
of
inverse
csc u
(
-1/
|x|•√(x^2-1)) •
derivative
of u
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derivative
if
a^x
a^x •
lna
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derivative
of loga x
(
1/x
)
lna
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Formula for radius of
convergence
for a geometric series
a/(
1-r
)
<1
-remember you never need to check
endpoints
for geometric series
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lnx^x can become
xlnx
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lnx + ln3 can become
ln3x
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ln3-lnx can become
ln3/x
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derivative
of f(u)
f'(u) • du/dx
ALWAYS
REMEMBER THE
CHAIN
PIECE
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See all 65 cards
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