BC Flashcards

(42 cards)

1
Q

Average Rate of Change

A

Slope of secant line between two points, use to estimate instantanous rate of change at a point.

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2
Q

Instantenous Rate of Change

A

Slope of tangent line at a point, value of derivative at a point

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3
Q

Formal definition of derivative

A

limit as h approaches 0 of [f(a+h)-f(a)]/h

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4
Q

Alternate definition of derivative

A

limit as x approaches a of [f(x)-f(a)]/(x-a)

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5
Q

When f ‘(x) is positive, f(x) is

A

increasing

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6
Q

When f ‘(x) is negative, f(x) is

A

decreasing

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7
Q

When f ‘(x) changes from negative to positive, f(x) has a

A

relative minimum

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8
Q

When f ‘(x) changes fro positive to negative, f(x) has a

A

relative maximum

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9
Q

When f ‘(x) is increasing, f(x) is

A

concave up

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10
Q

When f ‘(x) is decreasing, f(x) is

A

concave down

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11
Q

When f ‘(x) changes from increasing to decreasing or decreasing to increasing, f(x) has a

A

point of inflection

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12
Q

When is a function not differentiable

A

corner, cusp, vertical tangent, discontinuity

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13
Q

Product Rule

A

uv’ + vu’

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14
Q

Quotient Rule

A

(uv’-vu’)/v²

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15
Q

Chain Rule

A

f ‘(g(x)) g’(x)

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16
Q

y = x cos(x), state rule used to find derivative

A

product rule

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17
Q

y = ln(x)/x², state rule used to find derivative

A

quotient rule

18
Q

absolute value of velocity

19
Q

y = sin(x), y’ =

A

y’ = cos(x)

20
Q

y = cos(x), y’ =

A

y’ = -sin(x)

21
Q

y = tan(x), y’ =

A

y’ = sec²(x)

22
Q

y = csc(x), y’ =

A

y’ = -csc(x)cot(x)

23
Q

y = sec(x), y’ =

A

y’ = sec(x)tan(x)

24
Q

y = cot(x), y’ =

A

y’ = -csc²(x)

25
y = sin⁻¹(x), y' =
y' = 1/√(1 - x²)
26
y = cos⁻¹(x), y' =
y' = -1/√(1 - x²)
27
y = tan⁻¹(x), y' =
y' = 1/(1 + x²)
28
y = cot⁻¹(x), y' =
y' = -1/(1 + x²)
29
y = e^x, y' =
y' = e^x
30
y = a^x, y' =
y' = a^x ln(a)
31
y = ln(x), y' =
y' = 1/x
32
y = log (base a) x, y' =
y' = 1/(x lna)
33
To find absolute maximum on closed interval [a, b], you must consider...
critical points and endpoints
34
mean value theorem
if f(x) is continuous and differentiable, slope of tangent line equals slope of secant line at least once in the interval (a, b) f '(c) = [f(b) - f(a)]/(b - a)
35
If f '(x) = 0 and f"(x) > 0,
f(x) has a relative minimum
36
If f '(x) = 0 and f"(x)
f(x) has a relative maximum
37
Linearization
use tangent line to approximate values of the function
38
rate
derivative
39
left riemann sum
use rectangles with left-endpoints to evaluate integral (estimate area)
40
right riemann sum
use rectangles with right-endpoints to evaluate integrals (estimate area)
41
trapezoidal rule
use trapezoids to evaluate integrals (estimate area)
42
Intermediate Value Theorem
If f(1)=-4 and f(6)=9, then there must be a x-value between 1 and 6 where f crosses the x-axis.