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.

Threads

Finding the Range of x Values for Quadratic Inequalities

  • greener1993
  • · Replies 23 ·
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23

Why are these two angles congruent?

  • Noxide
  • · Replies 11 ·
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11
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4

Proving Every Int. ≥ 12 Is a Combination of 4m + 5n

  • hocuspocus102
  • · Replies 1 ·
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1

How can 2^n > n be proven by induction?

  • Archetype2
  • · Replies 5 ·
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5

Solving the System Ax = b: Is Full Rank Necessary?

  • BobSea
  • · Replies 1 ·
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1

Uniform distribution of a disc

  • mathmathmad
  • · Replies 4 ·
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4

Proportion of Residents in Each Region

  • Nope
  • · Replies 21 ·
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21

Is There a Methodical Way to Solve Complex Probability Problems?

  • ScienceNewb
  • · Replies 3 ·
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3

Commuting matrices have common eigenvalues

  • Grand
  • · Replies 6 ·
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6

How to express cos((n*pi*)/2))

  • ETT
  • · Replies 1 ·
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1

How do you calculate (-1+h)^3?

  • morrowcosom
  • · Replies 2 ·
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2

Is the Intersection of Two Subspaces Always a Subspace?

  • lkh1986
  • · Replies 2 ·
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2

You're welcome. I'm glad I could help.

  • lovemake1
  • · Replies 5 ·
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5

De Moivre's Theorem: Find Expansion of cos 5θ

  • jammed
  • · Replies 4 ·
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4

Solve an Equation of Matrices Using Inversions

  • BraedenP
  • · Replies 14 ·
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14

How can I simplify this complex expression?

  • white1995gt
  • · Replies 9 ·
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9

Find Inverse of Matrix: x1, -x, -x1, 1-x

  • arkturus
  • · Replies 2 ·
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2

Determinant of Triangular Matrix - What Went Wrong?

  • fleeceman10
  • · Replies 12 ·
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12

Exponential Equation In Quadratic Form

  • chillfactor
  • · Replies 2 ·
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2
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9

System of Linear Equations: Infinitely Many Solutions

  • Mano Jow
  • · Replies 6 ·
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6

What is the Probability of Y being Greater than 5 Given X Equals a Constant?

  • sneaky666
  • · Replies 1 ·
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1

What does the equation represent?

  • zorro
  • · Replies 4 ·
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4

Finding Common Ratio of Geometric Progression for 3 Points on a Parabola

  • thereddevils
  • · Replies 7 ·
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7

Is the Locus of Point P a Hyperbola When Area OMPN is Constant?

  • zorro
  • · Replies 2 ·
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2

Equations with multiple absolute value operators

  • pinsky
  • · Replies 4 ·
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4

Solving polynomial equation using induction

  • thereddevils
  • · Replies 2 ·
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2

How do I solve the inequation \sqrt{n} < \sqrt{n-1} + .01?

  • Brunno
  • · Replies 3 ·
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3

What is the formula to prove algorithm A is O(logN) based on given constraints?

  • kasper_2211
  • · Replies 1 ·
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1

Rational numbers and commutative law

  • bips2010
  • · Replies 1 ·
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1

Which is a Chord of a Hyperbola? AB or PQ?

  • zorro
  • · Replies 5 ·
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5

Coordinate Geometry: Find A & B on 5x-12y=6 & 3x-4y=-2

  • thereddevils
  • · Replies 1 ·
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1

Finding the Inverse of a Cubic Polynomial

  • QuarkCharmer
  • · Replies 6 ·
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6

Can a 4th Order Polynomial be Factored Without a Computer?

  • bob1182006
  • · Replies 4 ·
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4

How to Solve Cubic and Quartic Equations for Homework

  • Brunno
  • · Replies 9 ·
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9
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2

Uncovering the Flaw: A Critique of the Proof of 1 > 0 Using Trichotomy Axiom

  • sponsoredwalk
  • · Replies 4 ·
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4

Find the possible combinations

  • Mentallic
  • · Replies 1 ·
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1

How can I solve for b in the equation csc(6b+pi/8) = sec(2b-pi/8)?

  • I Like Pi
  • · Replies 1 ·
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1

Solve Inequality: 4x^2/(1-√(1+2x))^2 < 2x+9

  • thereddevils
  • · Replies 1 ·
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1

Projectile Motion (Regular Physics) question

  • Jonathen
  • · Replies 3 ·
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3

What is the formula for understanding sample distribution in CDF?

  • sneaky666
  • · Replies 3 ·
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3

Does AB = I Imply BA = I for Square Matrices?

  • zohapmkoftid
  • · Replies 18 ·
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18

What Branch of Math do I need?

  • Kombaiyashii
  • · Replies 2 ·
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2

Finance Problem but its basic math, i just cant see it right now

  • Nawz
  • · Replies 1 ·
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1

Statistics: Expectations Question

  • shawnz1102
  • · Replies 2 ·
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2

The argument of a complex number

  • Null_Pointer
  • · Replies 1 ·
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1

Adding and subtracting different bases with common exponents in ring Z

  • morrowcosom
  • · Replies 4 ·
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4

Proof for inequality involving absolutes

  • Undirrast
  • · Replies 22 ·
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22

Simplifying √(3+2√(2)): Find the Integer and Irrational

  • chillfactor
  • · Replies 6 ·
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6

First Order Difference Equations

  • diomedes.
  • · Replies 3 ·
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3

Single equation involving two functions

  • Freye
  • · Replies 4 ·
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4

Simple algebraic / logarithmic question

  • mofoj
  • · Replies 10 ·
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10

Solve this System of Equations: .5= (x-40)/(x-y) and .5=(40-y)/(x-y)

  • bmed90
  • · Replies 3 ·
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3

Hardest Identity Evar involving sum and differences

  • amd123
  • · Replies 1 ·
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1

Solve for d: "Finding Unknowns in Equations with Sin and Cos

  • qswdefrg
  • · Replies 10 ·
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10

Prove 2(a³+b³+c³) > a²b + a²c + b²c + b²a + c²a + c²b

  • Undirrast
  • · Replies 4 ·
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4

Find Area of Circle Segments: Chord Length 4cm, Radius 3.3cm

  • MASH4077
  • · Replies 2 ·
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2

Basis & Dimension: Subspace of R4

  • ggb123
  • · Replies 2 ·
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2

Intersection of planes using cross product

  • nobahar
  • · Replies 8 ·
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8

How can I find angle A in a right triangle without using a calculator?

  • wrekoniz3
  • · Replies 1 ·
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1

Impossible Bearing and Triangle word problem.

  • amd123
  • · Replies 10 ·
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10

Finding the Zeros of a Rational Function

  • ghostbuster25
  • · Replies 2 ·
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2

Calculating Density of Y for a Given Function

  • sneaky666
  • · Replies 1 ·
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1

The form of a partial fraction decomposition

  • rowdy3
  • · Replies 2 ·
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2

Solving the Inequality (x-1) / (x+2) < 1: Step-by-Step Guide

  • acronym
  • · Replies 2 ·
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2

How to Solve an Equation Involving a Determinant?

  • rowdy3
  • · Replies 1 ·
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1

Binomial alternating series- even numbers

  • QuantumP7
  • · Replies 4 ·
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4

Problems with inverses in arithmetic in ring z

  • morrowcosom
  • · Replies 5 ·
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5

Vectors. Determine the eqn. of plane M?

  • bob29
  • · Replies 1 ·
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1

Solving Exponential Equations: e^2x = 5e^3x

  • cue928
  • · Replies 5 ·
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5

Simplify the Determinant of a 4x4 Matrix A with Row and Column Operations

  • ultima9999
  • · Replies 11 ·
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11

How Can I Use Reverse Linear Interpolation in My Computer Simulation?

  • sciwizeh
  • · Replies 5 ·
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5

Help with computing density of one variable change.

  • sneaky666
  • · Replies 2 ·
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2

Calculating g(f(5)) for Composite Functions

  • ghostbuster25
  • · Replies 4 ·
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4

How Do You Find the Inverse of the Composite Function fh(x)?

  • ghostbuster25
  • · Replies 3 ·
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3

Logarithmic Inequalities: Solving e^(2-3x)>4

  • EL ALEM
  • · Replies 6 ·
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6

Algebra Simplification: Solving for X with Conjugates

  • Axecutioner
  • · Replies 3 ·
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3

Solve Trig Inequalities: Find x in [0,2pi] for 2cosx+1≤0

  • EL ALEM
  • · Replies 7 ·
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7

Geometry Problem Involving Circles and Fixed Radius-

  • Canada_Whiz
  • · Replies 22 ·
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22

Congruence with numbers with exponents on top of exponents

  • morrowcosom
  • · Replies 7 ·
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7

What is the Geometric Progression for Rabbit Population Growth?

  • thereddevils
  • · Replies 4 ·
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4

Question on triangometry which one we measure ?

  • r-soy
  • · Replies 4 ·
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4

How Can You Prove the Triangle Inequality Using Case Analysis in Discrete Math?

  • cameron_c83
  • · Replies 4 ·
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4

Finding all values that satisfy the equation

  • EL ALEM
  • · Replies 8 ·
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8

What is the Difference Quotient for f(x) = sin(x)?

  • EL ALEM
  • · Replies 3 ·
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3
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3
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1

Two formulas for calculating root of a complex number in a exponential form

  • R A V E N
  • · Replies 1 ·
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1

Finding the Domain of an Algebraic Function

  • NelsonsXanadu
  • · Replies 4 ·
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4

Natural log's and trigonometric identity's.

  • stf
  • · Replies 7 ·
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7

Solve Arithmetic in Group Z7: Calculating 6-3*5 = 5 or 2? Find Out Here!

  • morrowcosom
  • · Replies 4 ·
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4

Inequality Proof: Showing \left|ab\right|\leq\frac{1}{2}(a^{2}+b^{2})

  • kpoltorak
  • · Replies 9 ·
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9

Trig problem using formuals to transform the equation

  • agentc0re
  • · Replies 3 ·
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3

The Attempt at a SolutionReduce Ellipse: Centre & Eccentricity

  • zorro
  • · Replies 2 ·
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2

Finding vector perpendicular to another vector

  • TsAmE
  • · Replies 2 ·
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2

Solving an Inequation with Fractions: 1° Equation Help

  • Brunno
  • · Replies 31 ·
2
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31

Simplifying f=uRuR in D3: A Beginner's Guide

  • morrowcosom
  • · Replies 2 ·
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2

Solve derivative by using the definition of the derivative limit

  • MrNeWBiE
  • · Replies 10 ·
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10