Precalculus Mathematics Homework Help Forum

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Free pre-calculus mathematics homework help from qualified mentors. Math courses prior to calculus homework. Please use the template when requesting help and show your work.
Chance of Selecting Twins from Group of 30 [Solved!]
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24
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Plotting points in three-dimensional space
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8
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910
Trying to understand the property of absolute value inequality
2
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38
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2K
Using inverses to solve systems of equations
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4
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572
"Calculating Korifice Value in Cranes TP 410M, Problem 7-12
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6
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1K
Solve 2 Triangle Problem: Calculate Exact Value of x
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7
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1K
Is it ok to assume matrices A and B as identity matrix?
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25
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940
Find the GCD of the given complex numbers (Gaussian Integers)
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4
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1K
Solving Equations: Does Squaring Make False True?
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20
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775
Proving inverse of a 2 x 2 matrix is really an inverse
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3
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733
What Does Commutation Mean for Matrices A and B?
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3
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811
Problems in manipulating these 4 radical equations
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8
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799
Show that ##f(x)=2',1',2'## in the irreducible Polynomial
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8
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696
Transformations to both sides of a matrix equation
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25
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1K
Is there a rule that states that I should not divide in this scenario?
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10
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628
Deriving algebraic definition of cross product
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12
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857
Free variables for a matrix in REF
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3
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1K
Gauss-Jordan Elimination algorithm steps
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1
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496
Finding vectors parallel to a given vector
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5
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1K
Identifying the type of expression
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3
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451
Finding the value of lambda so that two lines are parallel
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6
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927
Exploring the Math of Glucose Polymers: Understanding 6^n
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6
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685
Interchanging x and y for inverse function
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13
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2K
Solving an Asymmetrical Inequalities Problem: Seeking Light
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29
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1K
Cannot understand what ##(mod ~ \pi)## means in the given formula
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7
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636
Is ##f(x)=2^{x}-1## considered an exponential function?
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12
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1K
Trig Identities - Pre-calculus in a Nutshell - Section 4 Question 1
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24
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2K
3x3 matrix with complex numbers
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18
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1K
Inequality question -- Need help getting started...
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7
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622
Is it Possible for x^2 to Exceed 900?
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32
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1K
Calculating the distance from a point to a plane
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1
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742
Why Does Flipping the Denominator in Complex Fractions Give the Wrong Answer?
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9
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640
Solving a nested logarithmic equation
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2
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736
Find all the ways of writing N into x^2-y^2
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8
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794
Solving Plane Equation 3x + 2y -z = 4
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8
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1K
Find the range of values of a + b
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6
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586
How to Simplify This Trigonometric Equation Using Substitutions?
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4
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614
Find the coordinates of D which lies on the vector BC
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4
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612
Two roads meeting a river at different angles (heights and distances)
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7
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545
Why is this result different? (calculating the sides of a triangle)
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6
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621
Make ##x## the subject of the formula
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15
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659
Find the Area of the shaded region in the given problem
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1
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677
I don't understand this step in turning this negative into a positive
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6
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695
A formula involving the sum of cosines of the angles of a triangle
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6
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935
Algorithm problem involving 3 points and 3 lines in the x,y plane
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7
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908
Simplifying this complicated fraction
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6
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641
Finding the domain of a composite function
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10
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868
Prove that there are infinitely many primes of the form ## 6k+1 ##?
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12
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1K
How can I simplify 1/cuberoot(2)?
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13
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848
Geometry: prove that point M is touched by 4 circles
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4
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857
Justifying Equilateral Triangle AEF in ABCD
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5
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807
Exploring Equation of a Straight Line in 3D Space
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17
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1K
Solving a⁻¹ - b⁻¹ = b - a /(ab)
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13
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917
Calculating Left Hand Limit: ##\sqrt 6##
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17
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784
Find an equivalent equation involving trig functions
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4
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551
MHB Find this unknown angle in the triangle
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25
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2K
What Is the Next Step in Solving This Logarithmic Equation?
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5
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583
Find angle B in the trigonometry problem
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30
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3K
Solve the given trigonometry problem
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7
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Solve the given equation that involves fractional indices
2
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39
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2K
Finding the angle between two vectors
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2
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659
Solving an absolute value quadratic inequality
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9
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816
How to find z^n of a complex number
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12
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1K
Probability of not getting a prize
2
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36
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2K
What are the implied domain and range of cos(arctan(x))?
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3
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1K
Area of Quadrilateral inside a rectangle
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2
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776
Are both sample spaces the same or do they mean different things?
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5
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707
Geometry problem with arcs in a triangle
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16
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932
Writing a logarithm in a form not involving logarithms
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4
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945
Solve the given vector problem
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1
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621
Understanding Negative Velocity and Displacement on a Velocity-Time Graph
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7
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578
Quadratic inequalities with absolute values
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7
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755
Triangle formed by straight lines
2
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43
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2K
Need Aid On This Problem Set (Combinations of Month Numbers in 10 Years)
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17
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1K
Formula for Xo and Yo for graph of quadratic function
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2
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916
Prove that ##AE=2BC## -Deductive Geometry
2
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52
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2K
Is it possible to find the range of this function?
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22
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932
Limit question to be done without using derivatives
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25
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786
Find the values of a and b in the given polynomial
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15
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1K
Show that ##P(X=2)=\dfrac{2}{15}##
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7
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902
Choose a ball at random from a randomly selected box - alternative way
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10
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1K
Do We Need Boundaries for Fraction Equations?
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21
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864
Quadratic equation: Which way is correct? pic1 or pic2?
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32
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973
Complex numbers problem |z| - iz = 1-2i
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20
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957
Logarithm Questions - Solve Now!
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3
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867
How do you find the LCM and HCF?
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14
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3K
A problem related to divisibility
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3
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659
Changing the base of a logarithm
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7
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941
How to apply BODMAS correctly in the given problem
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11
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724
Stopping the Bus in 100m - Can it be done?
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4
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1K
Laws of Logarithms: Definition & Examples
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8
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834
Calculating Probability Using Bayes' Formula: Solving for P(urn III | silver)
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6
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894
Prove that ## g(x)=f(x)\log {x}-\int_{2}^{x}t^{-1}f(t)dt ##.
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7
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845
How Can I Solve a System of Equations With Complex Numbers?
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19
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Solve for ##x## in the Given Problem
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17
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861
How Can I Solve ##1+i^3+i^5+...+i^{553}+i^{555}\ ?##
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4
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615
InWhat Situations Do We Enounter the Golden Ratio?
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10
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How to prove this using Abel's summation formula?
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9
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975
Estimating the Gradient of a Graph: Student's Attempt
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11
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874
Proof about two disjoint non-empty sets ## S ## and ## T ##
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11
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1K

Precalculus Homework Help

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