Define Census, Sample and Survey
Census: The collection of information from the whole population
Sample: A subset of the population which should be chosen at random to avoid bias
Survey: The collection of information from a sample.
What is a Stationary Point.
A point where the derivative of f(x) is equal to 0
What is the formula for a logarithm?
logb(bx) = x
Draw and Label a Unit Circle using Radians, and mark which quadrants each value (Cosine, Sine, Tangent) are positive in.
0/2pi, pi/2, pi, 3pi/2
All, Sine, Tangent, Cosine
What is the equation for finding the Period?
2pi/b
Draw a Negatively Skewed Graph
The data is stretched out across the left side.
What is the derivative of F(x) = 6x3 - 5x2 + 2x - 3
F'(x) = 18x2 - 10x + 2
What are all the rules of Exponents and Logs?
ax * ay = ax + y
ax / ay = ax - y
(ax)n = ax * y
a-x = 1/ax
x0 = 1
logax + logay = loga(xy)
logax - logay = loga(x/y)
logaxn = nlogax
Draw the Ratio Triangles for the Unit Circle
45,90,45 > 1, 1, sqrt2
60,60,30/30 > 2,2,1/1,sqrt3
Find the Amplitude and Period of
y = 5cos2x + 3
Period = pi
Amplitude = |5|
Abe borrowed $16000 from a finance company at 10% per annum, compounded half-yearly. What amount of money will discharge his debt after 1¹/₂ years?
$18522
Evaluate
limx --> 1 = (7x2 - 4x - 3) / (3x2 - 4x + 1)
limx --> 1 = 5
Solve
log4(v + 8) = log4(-4v - 2)
-2
Find all possible values for Sinx= 1/2
for 0 < x < 2pi
pi/6, 5pi/6, 7pi/6, 11pi/6
Sketch the graph for 0 < x < 4pi
y = 2sin(1/2)x + 5
Check Graph
1. What was the highest score on the test?
2. What percent of the class scored above a 72?
3. What was the median score on the test?
4. What percent of the class scored between 88 and 96?
1. 102
2. 75%
3. 88
4. 25%
A curve has the equation y = x2 - 4x + 21
Find dy/dx
Find the Minimum point's position
dy/dx = 2x - 4
When x = 2, a Minimum Point occurs at (2,17)
Expand
log3(z((3sqrt)xy)
log3z + (log3x / 3) + (log3y / 3)
Without Using A Calculator Simplify the following
2tan(-5pi/4) - sin(3pi/2)
-1
Solve 2cos2x + cosx - 1 = 0
pi/3, pi, 5pi/3
Without using your calculator find the standard deviation for the following data set (Round to 3 sig fig)
2.4, 3.4, 3.6, 3.8, 3.8, 4.0, 4.9
0.691
Consider f(x) = 2x + (2 / x)
a) Find F'(x)
b) Draw a Sign Diagram for F'(x)
c) Find the position and nature of any stationary points
d) use technology to help sketch the graph F(x)
a) F'(x) = 2 - (2 / x2)
b) Check Diagram
c) Maximum Turning Point at (-1, -4), Minimum Turning Point at (1, 4)
d) Check Graph
Solve the Following
1.) log93x + log92 = 2
2.) log34 + log32x = log356
3.) 52p = 53p + 1
1.) 27/2
2.) 7
3.) -1
Find the exact values for Sinx and Cosx given that
Tanx = -12/5
3pi/2 < x < 2pi
Sinx = -12/13
Cosx = 5/13
(DOUBLE POINTS)
Hyun Joo is riding a ferris wheel.
H(t) = −10cos((2pi/150)t) + 10
models her height m above the ground, t seconds after the ride starts. Here, t is entered in radians.
a) Sketch the graph
b) When does Hyun Joo First reach a height of 16 meters?
c) At which times is Hyun Joo at 0 meters
(When 0 < t < 225)
a) Check Graph
b) 52.862
c) 0, 150