Precalculus Mathematics Homework Help Forum

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.

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1

Proving Uniqueness of Solutions in Non-Linear Systems of Equations

  • FeDeX_LaTeX
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How to Choose a Stratified Sample Using a Random Number Table

  • claytonh4
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4

Why is x^2 = -1 not a possible solution for x in the equation x^2 + 1 = 0?

  • help1please
  • · Replies 15 ·
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15
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Trigonometry, area of triangle

  • Feodalherren
  • · Replies 10 ·
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10

Simplifying finite geometric series expression

  • Beer-monster
  • · Replies 3 ·
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3

Prove A is a singleton from family of sets property

  • Kolmin
  • · Replies 4 ·
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4

Simplify Expression: f(x) 1/x^2 -4, x+1 - x^2/x+2

  • slywolf1992
  • · Replies 6 ·
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6

Finding x(t) from x(-2t+1) for Scientists

  • baby_1
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4

Simplifying (60x⁴−240x)/(3x⁴+x³−14x²+4x+8)

  • trollcast
  • · Replies 3 ·
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3

Are Events X, Y, and Z Mutually Exclusive in David's Fishing Scenario?

  • thornluke
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3

Probability Two tetrahedral dice are thrown

  • thornluke
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4

Problem algebra involving third roots

  • ParisSpart
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3

Finding a³+b³+c³ for roots of 2x³-15x²+30x-7=0

  • DoremiCSD
  • · Replies 9 ·
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9

Trig Question, Find x-intercepts

  • dolpho
  • · Replies 6 ·
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6

Powers of p and q from a=v^p*t^q

  • valerieangel
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2

How do I solve for matrix A in the equation y=mx+c?

  • uperkurk
  • · Replies 52 ·
2
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52

Solving Linear System of Equations: Elimination

  • ilovecake
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2

Not sure if I'm drawing the reciprocal function properly

  • priceofcarrot
  • · Replies 17 ·
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17

Summations Problem: Sum of Multiples of 5 from 5-1550

  • elainehula
  • · Replies 3 ·
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3

Probability Problem - Is it a Bayes application?

  • Kolmin
  • · Replies 7 ·
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7

Which Latitude has the Smallest Radius?

  • darshanpatel
  • · Replies 4 ·
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4

In Dire need of assistance for optimisation (Area/volume)

  • DJ-Smiles
  • · Replies 7 ·
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7

Finding the last corner of a square

  • H4NS
  • · Replies 14 ·
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14

Pole in a corner - Trig word problem

  • MacLaddy
  • · Replies 13 ·
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13

Why Does arccos(x) - arcsin(1-x) Equal 90° Have No Solutions?

  • acen_gr
  • · Replies 42 ·
2
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42

Solving rational and radical equations with fractions

  • wrx
  • · Replies 4 ·
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4

Finding x in an inverse trigonometric equation

  • acen_gr
  • · Replies 12 ·
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12

Trigonometry Word Problem involving Inverse trigonometric functions

  • acen_gr
  • · Replies 5 ·
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5

Solution of Trigonometric Equations

  • acen_gr
  • · Replies 20 ·
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20

Simple factoring question here: Thanks

  • nukeman
  • · Replies 13 ·
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13

Solving Scalar Product: Figure Drawing for (AC - AB) * AB = 0

  • H4NS
  • · Replies 6 ·
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6

Question using the Sine Rule and Bearings

  • scotty_le_b
  • · Replies 1 ·
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1

Cartesian Product and Inclusion - Looking for a Proof

  • Kolmin
  • · Replies 8 ·
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8

Horizontal Asymptote by Long Division?

  • Painguy
  • · Replies 4 ·
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4

Finding a man's age given fractions of his life stages

  • kkaterr
  • · Replies 12 ·
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12

Using logarithms in loan amortization formula

  • jhudson1
  • · Replies 7 ·
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7
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8

Finding the limit of a sequence.

  • ashwinnarayan
  • · Replies 1 ·
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1

Proving Trigonometric Identities problem

  • acen_gr
  • · Replies 13 ·
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13
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5

Graphing functions and identifying features

  • zebra1707
  • · Replies 4 ·
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4

Evaluating logarithms given log(a)b = 3

  • zebra1707
  • · Replies 2 ·
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2

Finite Limit Problem: Understanding cosx/x^0 = 1

  • lukatwo
  • · Replies 6 ·
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6

Quick Q: Understanding (k+1)^2 in Series Calculations

  • phospho
  • · Replies 3 ·
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3

Can -15 be the L.C.M. of -5 and -3, and plotting complex cube roots?

  • Swetasuria
  • · Replies 21 ·
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21

Inverse Trigonometric Equation problem

  • acen_gr
  • · Replies 11 ·
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11

Prove that sin⁶θ + cos⁶θ = 1 - 3sin²θcos²θ

  • acen_gr
  • · Replies 5 ·
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5

Calculating Nth Root of Vector: Non-Integer Solutions

  • sue132
  • · Replies 3 ·
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3

Probability of losing if a 5 comes up (dice problem)

  • agnibho
  • · Replies 4 ·
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4

Discrete Mathematics - Void Sets being Subsets of other Void Sets

  • johnstobbart
  • · Replies 2 ·
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2

Subtracting Equations: How to Solve for Unknown Variables

  • Looh
  • · Replies 1 ·
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1
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3
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Solving Normal Distribution Homework: μ, σ, X, p

  • TyErd
  • · Replies 1 ·
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1

How can I simplify a summation with constant variables A and B?

  • nobahar
  • · Replies 10 ·
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10

Trigonometric Limit Problem: Finding the Limit as x Approaches 0

  • PotentialE
  • · Replies 1 ·
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1

Basic Set Theory: Determining Relations: Reflexive, Symmetric, Transitive

  • Bob4040
  • · Replies 2 ·
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2
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2

Proving trigonometric identities

  • DJ-Smiles
  • · Replies 6 ·
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6

Proving 4(sin⁴x + cos⁴x) = cos(4x) + 3

  • phospho
  • · Replies 12 ·
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12

Why is y=(-2)^x impossible to graph?

  • Gregory.gags
  • · Replies 9 ·
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9

Complex power raised over real number.

  • PrashntS
  • · Replies 6 ·
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6

Solving for a variable in terms of two other variables

  • iancurtis
  • · Replies 7 ·
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7

Finding the equation of a line through (-2, 1) and (2, 3)

  • nukeman
  • · Replies 8 ·
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8
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How to solve this triangle problem.

  • feihong47
  • · Replies 13 ·
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13

How do I evaluate this log function?

  • feihong47
  • · Replies 6 ·
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Conditional probability with colored tulip bags

  • Charlotte87
  • · Replies 2 ·
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2

Calculating the mean and variance from a moment generating function

  • Charlotte87
  • · Replies 2 ·
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2

Understanding Trig Quadrants and the Role of |k| ≥ 1 in Solving for θ

  • phospho
  • · Replies 2 ·
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2

Basic Topology Proof: y in E Closure if E is Closed

  • bedi
  • · Replies 1 ·
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1

What is the Mathematical Model for Desires and Eating Habits?

  • Fat=laziness
  • · Replies 23 ·
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23

Finding the inverse of a rational function

  • mindauggas
  • · Replies 7 ·
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7

Why does factoring 2sin θ − csc θ give extra solutions?

  • phospho
  • · Replies 4 ·
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4

Oblique asymptotes of a rational function

  • mindauggas
  • · Replies 1 ·
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1

Algebra II Correct Form to Answer Discrimants Problems

  • velox_xox
  • · Replies 8 ·
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8

Finding the area of triangle AOB with a circle and parallel line

  • Kartik.
  • · Replies 9 ·
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9

Inclusion - exclusion principle

  • threeder
  • · Replies 6 ·
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6

Summation of series using method of difference

  • hhm28
  • · Replies 14 ·
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14

Algebraic Expansion with complex numbers

  • h_ngm_n
  • · Replies 8 ·
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8

Why does cos4x give two different forms when expanded?

  • jtart2
  • · Replies 6 ·
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6

Prove Trig Identity: CosθSinθ = Cos2θ+CosθSinθ

  • Bradyns
  • · Replies 2 ·
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2

Combining two right triangles back to the original

  • hgphtgi
  • · Replies 1 ·
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1

What are the different number of matrices available for the following

  • vcakula
  • · Replies 5 ·
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5

Are These Relations Symmetric?

  • Shark1
  • · Replies 1 ·
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1

Summer Math review: Solve for z

  • Heqi
  • · Replies 3 ·
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3

What is the equation of a line given one point and another unknown value?

  • mynameisfunk
  • · Replies 3 ·
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3

How Do You Prove Point Equidistance and Find Loci in Geometry?

  • Kartik.
  • · Replies 2 ·
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Proving the sum of squared odd numbers

  • Duderonimous
  • · Replies 7 ·
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7
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3

Why does (r² - x²)/r² become 1 - (x/r)²?

  • claytonh4
  • · Replies 7 ·
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7

Exact Value of Inverse Trig Function

  • communitycoll
  • · Replies 6 ·
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6

System of two equations with radical expression

  • dmehling
  • · Replies 24 ·
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24

3 questions from basic binominal theory

  • threeder
  • · Replies 10 ·
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10

(x-y)3 + (y-z)3 + (z-y)3 = 3(x-y)(y-z)(z-x)

  • lovatto
  • · Replies 4 ·
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4

Find Radius of Largest Circle in Middle - IGCSE Math

  • salik
  • · Replies 10 ·
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10

Do I have a problem? Basic proportion problem.

  • Life-Like
  • · Replies 3 ·
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How to Simplify a Rational Function

  • LoA
  • · Replies 2 ·
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2