Pre-requisites Real Numbers, Estimation, & Logic.
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Transcript of Pre-requisites Real Numbers, Estimation, & Logic.
![Page 1: Pre-requisites Real Numbers, Estimation, & Logic.](https://reader035.fdocuments.us/reader035/viewer/2022081816/56649ea25503460f94ba5d4f/html5/thumbnails/1.jpg)
AP CALCULUS
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Pre-requisites
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.1
Real Numbers, Estimation, & Logic
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IN CALCULUS, THE PRINCIPLE NUMBERS ARE REAL NUMBERS.
Be able to calculate with rational numbers (expressed as either repeating or terminating decimals) or irrational numbers (decimals that do NOT terminate or repeat)
Be able to ESTIMATE answers before pushing a button on a calculator! Use good mental mathematics.
Much done in math must be proven, and different methods of proof can be employed.
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0.2
Inequalities and Absolute Value
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SOLVING INEQUALITIESSolve by comparing the inequality to
zero, factor if possible, and solve.
),2/1()4,(
42/1),04()012(
42/1),04()012(
0)4)(12(
0472
4722
2
xxxANDxOR
xxxANDx
xx
xx
xx
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SOLVING ABSOLUTE VALUE
Consider absolute value as distance, if the distance is greater than a constant, you must get further away in both directions. If the distance is less than a constant, the solution values must be within a certain range of values.
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0.3
The Rectangular Coordinate System
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CARTESIAN COORDINATE SYSTEM
Graphs are done in the x-y system. You can find distance between any 2 points using Pythagorean theorem and midpoint of 2 any 2 points simply as the average.
In both instances, a graph is often helpful in understanding the situation, prior to calculating.
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LINEAR EQUATIONS
General form: Ax + By + C = 0 Slope-intercept form: y = mx + b Point-slope form y – y1 = m(x – x1)
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0.4
Graphs of Equations
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QUADRATIC FUNCTIONS
Graphs to a parabola Vertex at (h,k) Graph has reflection symmetry
hkyax
DCxByAy
khxay
DCyBxAx
2
2
2
2
)(
0
)(
0
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CUBIC FUNCTIONS Reflects through the origin
dcxbxaxy 23
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0.5
Functions & Their Graphs
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FUNCTIONS
Domain (x-values): real numbers which can be placed for x
Range (y-values): real numbers which are created from the values for x
Even functions: Reflect through the y-axis, f(x) = f(-x)
Odd functions: Reflect through the origin, f(x) = -f(-x)
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0.6
Operations on Functions
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FUNCTIONS CAN BE ADDED, SUBTRACTED, MULTIPLIED OR DIVIDED
Only consideration? Operations cannot result in a zero denominator
Composition of functions: When g is composed on f, the range of f becomes the domain for g.
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0.7
Trigonometric Functions
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FOR ALL PTS, (X,Y) ON THE UNIT CIRCLE:SIN T = Y, COS T = X, TAN T = Y/X
t = real number (length of arc on unit circle) that corresponds to pt (x,y)
y = sin x y = cos x
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OTHER TRIG FUNCTIONS
sec x = 1/cos x csc x = 1/sin x cot x = 1/tan x Pythagorean identity (main one,
others may be developed from this one)
1)(cos)(sin 22 xx