Find the derivative of a function using different rules!
Finding the derivative of a function that includes...
slopes and tangent lines
related rates, derivative tests, velocity, etc.
optimization, rieman's sum, and integrals
100

Limit Definition:

f(x)=2x-3x2

lim h -> 0

2-3x

100

lnx

f(x)=lnx

1/x

100

second derivative of a function:

f(x)=3x4-4x3

36x2-24x

100

related rates

A pebble is dropped in a pool of water causing ripples in the form of concentric circles. The radius r of the outer ripple is increasing at a constant rate at 1 ft per sec. when the radius is 4ft at what rate is the total area A of the distributed water changing.

8pi ft per sec

100

indefinite integrals

s(t)=/(3t2-6t+2)dt

s(t)=t3-3t2+2t+C

200

Power Rule:

f(x)=5x4+10x2

60x5

200

ex

f(x)=x3(e-2x)

3x2e-2x-(2x3e-2x)

200

slope at a point

find the slope of f(x)=sinx where x=π/4

21/2/2

200

marginal profit

A company manufactures widgets and the total cost c(x) in dollars associated with producing x widgets is given by c(x)=500+10x+0.1x2. The revenue from selling x widgets is given by r(x)=15x-0.05x2. Find marginal profit when 100 widgets are procured and sold.

-25

200

definite integral

/(1 to -1) (x+1)/(x2+2x+2) dx

6/25

300
Product Rule:

f(x)=5x2(2y4)

20xy4

300

sinx

f(x)=sinx

cosx

300

equation of tangent line

f(x)=3x3-5x2+2x+1, x=2

y-9=18(x-2)

300

velocity

At time t=0 a diver jumps from a diving board that is 32ft high. the divers initial velocity is 16ft per sec so the position of the diver is given by S=16t2+16t+32.  when does the diver hit the water?

2

300

integration by substitution

/x4(x5-9)3dx

1/20 (x5-9)4+C

400

Chain Rule

f(x)=(7x2+5x)5


5(7x2+5x)4(14x+5)

400

cosx

f(x)=3/4cosx

-3/4sinx

400

equation of normal line

f(x)=4-x2 at x=1

y-3=1/2(x-1)

400

first derivative test

f(x)=x2-4x+5

dec(-infinity, 2), inc (2, infinity), min(2, 1)

400

optimization

make an open box that has a square base and surface area of 108 in2. find the dimensions that will produce a box with max volume.

height: 3 inches

width: 6 inches

500

Quotient Rule

f(x)=(3x2+6x+10)/4x2

-24x2-80x

500

Combination of Product and Chain Rules

f(x)= (12x2+7x)2(4x+6)

2(12x2+7)(24x+7)(4x+6)+4(12x2+7x)2
500

implicit differentiation

3x2-y=5x

6x-5

500

second derivative test

f(x)=2x3-12x2

concave down (-infinity, 2), concave up (2, infinity), poi (2, 32)

500

Riemann's sum

find the area under the curve from [-2, 2] for the equation f(x)=-|x|+3 from the left side. use 4 rectangles.

8

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