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.
Finding the domain (and range) of a logarithmic function
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Find the ##r^{th}## term of ##(a+2x)^n##
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3
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Solve for all angles x: cos(2x) + cos(x) = 0, where 0<x<2pi
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25
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Find the sum of the coefficients in the expansion ##(1+x)^n##
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5
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Solve using complete the square vs. quadratic formula
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11
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Show that ##^{n+1}C_r=^nC_r+^nC_{r-1}##
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14
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Solve the problem involving the cubic function
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12
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In how many ways can 5 prizes be given away to 4 boys?
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16
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2K
Figuring out Natural Deduction problem but can't find mistake
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3
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1K
How do I fix this surd inside a surd?
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3
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Distributing negative signs in logarithms
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2
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Solve the given trigonometry equation
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2
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[Statistics] Calculate the percentage
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4
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Find the value of ##\sqrt[5]{0.00000165}##
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4
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Solve the simultaneous equations
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7
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Factorize a number in a different base
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1
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Calculate the magnitude of driving force on the car
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15
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In what base is 647 the square of 25?
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4
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Calculate acceleration and speed of block
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3
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Calculate the value of ##θ## and ##X##
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6
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Basic Simultaneous Equations Problem
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State the domain and range for a given function
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7
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How long does it take the car to move 30 m from rest?
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7
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Work out an estimate for the total number of ponies in the forest
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28
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Find the time taken by the truck to move 1 metre
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3
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959
Combinations with identical and unidentical objects
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16
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1K
Number of ways of arranging 7 characters in 7 spaces
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8
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What Are the Values of A, B, and C for the Given Expression?
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19
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Factor an equation second order in ##x,y## with other variables
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14
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Solve the given problem involving logarithms
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5
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Given value of vectors a,b, b.c and a+(b×c), Find (c.a)
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5
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1K
Why Does Expanding (13-8)^99 Not Yield the Same Remainder as 5^99 Modulo 13?
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7
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A,B,C are 3 points with position vectors a,b,c Find length of median
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18
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Find an irrational number that satisfies the given inequality
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22
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To find the range of a given ##\sin## function
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15
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1K
Find the roots of the given cubic equation
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13
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Why is 3 = a x (1)^2 x (-3)^2 in this step of the solution?
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3
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975
How to find the range of a function with square roots?
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23
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1K
Solve the given problem involving conditional probability
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32
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Coin problem - all possible amounts from a set of coins
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7
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Solving Number Triangle Puzzle with Trial and Error
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21
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Complete the parametric equation for the line where the planes cross
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7
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Find the domain and the range of ##f-3g##
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3
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What Is the Correct Angle Between Vectors a and c?
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4
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Multi-event probability puzzle - is my answer correct?
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7
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Finding a Mistake: Probability of Y with X and Spins
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7
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2K
Struggling with a geometry puzzle - area of garden path
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11
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Converting number base of decimals
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11
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Find ##b-a## which satisfies following limit
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12
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What is ##7 \times 7## in base ##7##?
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13
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1st year high school geometry proof
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14
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To find the component of a vector perpendicular to another
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20
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LCM question -- how many packages of burgers and cheese slices to buy?
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13
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Finding the direction of infinite limits
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10
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Efficient Logarithmic Calculations for 0.3048 without a Calculator
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8
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Find the relation between 2 variables
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7
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Finding coincident angle between 2 equally spaced sets
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1
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Changing the subject of a formula
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16
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Find the value of ##a, b## and ##k## in the problem involving graphs
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6
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Find the ##r^{th}## term from beginning and end of ##(a+2x)^n##
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13
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Choose 6 pieces of candy from three flavors
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12
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Trying to resolve a volume calculation
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2
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Finding a conditional probability from joint p.d.f
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4
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892
A gardener collected 17 apples...
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32
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Prove that terms cyclic in ##a,b,c##, are in ##\text{AP}##
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7
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Rounding Errors to nearest 10cm
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26
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Solve the given inequality Q. 21
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2
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849
Question about the property of PDF
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8
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Show that these equations are linearly dependent using Mathematica
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6
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Quantitative reasoning problem
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5
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Find the sum of the coefficients of ##(x+y)^{16}##
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5
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Why is ##^{2m}C_m## equivalent to ##\dfrac{2m!}{m!m!}##?
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6
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950
Help please with De Moivre's Theorem (raising a complex number to a power)
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16
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Where Did ##(n−r+1)^{th}## Come From in Binomial Expansion?
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3
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Find the smallest integer ## a>2 ## such that ## 2\mid a ##
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3
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Optimizing Null Space Solutions: How to Remove Zeros in Rank Deficient Matrices
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10
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Complex mapping z ↦ ω = (z − a)/(z − b)
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5
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855
Partial Permutation, Combination question for buying dogs at the pet store
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19
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How can we fairly distribute food among four people with different appetites?
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27
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889
What is a point of using complex numbers here?
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3
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754
How Many Type A Pigs Have 3 DYL Blood in a Herd of 1,000?
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21
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Combination, partial permutation
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1
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711
Drawing marked balls from an urn
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10
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Basic counting methods — integers between 1 and 100 that are divisible by 7
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19
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Where Did I Go Wrong When Solving Inequalities With Negative Numbers?
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8
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S=u*t+a*t^2/2 VS ratio 1:2:3:5... t1/t10= ...
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8
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Find an integer having the remainders ## 1, 2, 5, 5 ##
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7
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Basic combinatorics: How many ways can 4 boys and 4 girls sit in a row such that no 2 girls sit together?
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27
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A railway carriage will accommodate 5 passengers on each side
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4
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957
MHB Volume and surface area of "One World Trade Center"
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6
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Probability related to cumulative distribution function
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4
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886
Two link planar robot elbow errors in textbook (Inverse kinematics)
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3
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885
Poisson Probability Distribution Problem
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19
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Find the value of ##k^2## in the problem involving trigonometry
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7
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Prove that ## 4\tan^{-1}\left[\dfrac{1}{5}\right]- \tan^{-1}\left[\dfrac{1}{239}\right]= \dfrac{π}{4}##
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13
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Ratio of the sum of ##n## terms of two AP series
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9
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863
Decompose 4x4 determinant into 24 determinants -- How many are zero?
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1
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Solve ## 4x+51y=9: x=15+51t, y=-1-4t ##
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2
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Solve the equation: ##\tan x ⋅\tan 4x = 1##
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4
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Is My Proof That ab<a Correct Given 0<a<1 and 0<b<1?
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4
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903

Precalculus Homework Help

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