if y=f(x) is continuous at every point of the closed interval [a,b] and differentiable at every point of its interior (a,b), then there is at least one point c in (a,b) at which the instantaneous rate of change equals the mean rate of change
Back
derivative test of marginal cost
Front
P' = R' -C'
Back
cos² (x) =
Front
0.5 + 0.5cos(2x)
Back
L(x) =
Front
f(a) + f'(a)(x-a)
Back
instantaneous rate of change
Front
limit of the difference quotient; slope of the tangent line = limh→0 f(h+x) - f(x)/h (derivative)
Back
y'(cos^-1(x))
Front
-1/√(1-x^2)
Back
composition of functions [chain rule]
Front
(fog)(x)
Back
speed =
Front
|velocity| = |s'(t)|
Back
product rule
Front
d/dx (p•q) = p' • q + p • q'
Back
d/dx (c) =
Front
0
Back
AP way to identify absolute max and min values on a given interval
Front
use a chart to find the y values of the critical points and end point of the given interval
Back
y'(a^x)
Front
a^x • ln(a)
Back
y'(tan^-1(x))
Front
1/(1+x^2)
Back
y' (sin x)
Front
cos x
Back
y' (cot x)
Front
-csc^2 x
Back
y'(loga x)
Front
1/(x • ln(a))
Back
y'(e^x)
Front
e^x
Back
y' (tan x)
Front
sec^2 x
Back
y'(csc^-1(x))
Front
-1/|x|√(x^2-1)
Back
Rolle's Theorem
Front
let "f" be continuous on a closed interval [a,b] and differentiable on (a,b) with f(a)=f(b); there is at least one point "c" in (a,b) such that f'(c)=0
Back
for R(x) = (ax^T + ...)/(bx^B + ...), then R(x) has a horizontal asymptote at the line...
Front
1: y=0 if B>T; 2: y=a/b if T=B; 3: y=mx+b if T=B+1; 4: none if T>B+1
Back
4 types of differentiability
Front
a function will fail to be differentiable at a point where there is a corner, cusp, vertical tangent, or discontinutiy
Back
Vav = displacement/travel time =
Front
Δs/Δt = f(t+Δt) - f(t)/Δt
Back
sin² (x) =
Front
0.5 - 0.5cos(2x)
Back
4 types of discontinuity
Front
removable, jump, infinite, and oscillating
Back
d/dx (f±g) =
Front
f'±g'
Back
extreme value theorem
Front
if f is continuous on a closed interval [a,b], then f had both a maximum value and a minimum value on the interval
Back
sin² θ + cos² θ =
Front
1
Back
quotient rule
Front
d/dx (high/low) = low(high)' - high(low)'/(low)²
Back
mean rate of change
Front
f'(c) = f(b)-f(a)/(b-a)
Back
y'(sec^-1(x))
Front
1/|x|√(x^2-1)
Back
Intermediate Value Theorem
Front
IF
1. f is a continuous function on the closed interval [a,b] AND
2. k is any y-value between f(a) and f(b), that is f(a)<k<f(b), THEN
3. there is at least one number c in [a,b] that is a≤c≤b, so that f(c)=k
Back
y'(ln x)
Front
1/x
Back
y' (cos x)
Front
-sin x
Back
s =
Front
f(t)
Back
y'(cot^-1(x))
Front
-1/(1+x^2)
Back
cos (2θ) = cos² θ - sin² θ =
Front
2cos² θ - 1 = 1 - 2sin² θ
Back
derivative
Front
the derivative of the function f with respect to the variable x is the function f' whose value at x is f'(x) = limh→0 f(x+h) - f(x)/h, provided the limit exists OR the derivative of the function f at the point x=a is f'(a) = limx→a f(x)-f(a)/(x-a), provided the limit exists
Back
y' (sec x)
Front
sec xtan x
Back
if y=f(u) and u=g(x), [chain rule]
Front
then dy/dx = (dy/du) • (du/dx)
Back
d/dx (x^n) =
Front
nx^(n-1)
Back
d/dx [(fog)(x)] = [chain rule]
Front
f'(g(x)) • g'(x)
Back
average rate of change
Front
difference quotient; slope of secant line = f(h+x) - f(x)/h
Back
AP Way to Show Continuity
Front
1. Point exists in Domain (find f(c))
2. Prove limit exists (limx→c^+ = limx→c^-)
3. Show limx→c = f(c)