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.
Cartesian points in polar coordinates.
  • lakitu
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Solving the Mystery of the Expansion Equation: 1/2(x-3)^2-18
  • Schrodinger's Dog
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Proving Evenness of n(n+1): Etiquette for Proofs
  • masterofthewave124
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29
Standard Deviation sample help
  • Hootenanny
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16
Solve Inequality Problem for f(x)=x^2+kx+k, Determine k
  • Sisyphus
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9
Proving Similarity of Matrices
  • cheunchoi
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7
No. of customers (probability)
  • Clari
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2
Newbie Needs Help Solving Equations
  • bambino9
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10
Solve f(g(3)) - Get Guidance & Help Now
  • lakitu
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Help solving log (natural number) equation
  • Muskox
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3
Analysis of $e^{ix}$ by Maclaurin Formula
  • Nea
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2
Simple Math Question: Finding the Value of A in a Divisibility Problem
  • dnt
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Need the domain of integral values that satisfy
  • cscott
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10
Solve for Point Corresponding to P=(-2,4) on g(x) Using f(x) and g(x)=2f(x-1)-3
  • Skydog287
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2
Finding the Equation of a Straight Line Through Two Points: How Do I Do It?
  • lakitu
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2
Solving a Trig Question: Identifying Independent & Dependent Variables
  • WillyTech
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1
Finding the Present Value Compounded Monthly
  • runicle
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1
Help with the concept of eigenvectors
  • kel
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5
Solve X² = 0: Step-by-Step Guide for Beginners
  • lakitu
  • · Replies 10 ·
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10
How Do You Simplify Radicals with Variables?
  • wScott
  • · Replies 22 ·
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22
A combinatoric problem of real life.
  • S&S
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2
Understanding the Equation: x(t)=2t+2 and Its Inverse Function x(-t)=-2t+2
  • dervast
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7
Angle-Angle-Angle conditions for proving triangles are congurent
  • AngelShare
  • · Replies 1 ·
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1
Polar points in rectangular coordinates help
  • lakitu
  • · Replies 6 ·
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6
Math Test: Limits, Derivatives & Combination/Permutation
  • mohlam12
  • · Replies 1 ·
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1
Incredibly small equation but cant find answer
  • Haxx0rm4ster
  • · Replies 4 ·
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4
Parabola Help: Find Vertex & Point | No Math Terms
  • konartist
  • · Replies 9 ·
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9
Why does my calculater calculate this wrong?
  • esradw
  • · Replies 3 ·
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3
Verifying Solution to 2\sin\theta\cos\theta + 2 \sin\theta - \cos\theta -1 = 0
  • Apost8
  • · Replies 10 ·
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10
Two questions - factoring and exponents
  • superdave
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7
What is the value of k for the decreasing volume of chlorine in a swimming pool?
  • rachael
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2
Modeling Sugar Dissolution in Hot Water: Finding the Decay Rate
  • rachael
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3
Why Does One Mathematical Approach Fail in This Optimization Problem?
  • ohlhauc1
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1
(non)fractional Negative Exponents
  • wScott
  • · Replies 12 ·
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12
How can I simplify the conversion of x^2+y^2-3cos\Theta+4sin\Theta=0 to polar?
  • sportsguy3675
  • · Replies 15 ·
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15
Calculating Triangle Area: S1, S2 and ABF
  • Semo727
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1
Question about determining digits of a number
  • GeoMike
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1
How to Prove Complex Trigonometric Identity?
  • clook
  • · Replies 14 ·
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14
Algebra 2: Simplifying Radicals with Exponents 8^(2/3) * 9^(1/2) - Evaluate
  • woahitzyou
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2
Simplify Parametric Equations: Learn How to Convert to Cartesian Form
  • lakitu
  • · Replies 4 ·
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4
Solving Trig Equations: Tips, Tricks, and Strategies for All Values of x (0-360)
  • Hootenanny
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3
Verifying Parametric Equation: (x+y)(x-y)^2 = k
  • Hootenanny
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Solve math equation without assumptions
  • Milind_shyani
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5
Solving 9.8*Sin(theta)=7.056*Cos(theta)
  • RedBurns
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Math Help: Solve 2 Questions with Isoceles Triangle
  • ohlhauc1
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How can I solve this factorization problem without assumptions?
  • Milind_shyani
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Applying trigonometric functions to some real life situations
  • funktion
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Optimizing Production with Linear Programming in Economics: A Math Question
  • Izekid
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Negative exponents and calculation rules
  • runicle
  • · Replies 20 ·
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20
Mastering Trig Identities: Tips and Tricks for Proving Identities
  • clook
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1
Solve Trinomial Problem: 2(2x^2+3x-14)
  • Hollysmoke
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5
Trouble with Limits: Discussing Parameters
  • mohlam12
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10
Understanding Vector Components and Resolved Parts: A Simple Explanation
  • hellraiser
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6
Is Every Number with an Odd Number of Divisors a Perfect Square?
  • GeoMike
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Imaginary multiplication with answer to be in polar (variables)
  • sportsguy3675
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Find the vertex, focus, and the directrix of the parabola
  • konartist
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2
How do I prove that x + 1/x is greater than or equal to 2 if x > 0
  • JasonJo
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Solving Proportionality: Cost of Running a Business w/ 18 Employees
  • lektor
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5
Finding the Equation of a 3D Line from Two Points
  • tandoorichicken
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4
Is there a way to simplify my chemical system model?
  • Hootenanny
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How many 3-digit numbers have exactly 2 identical digits?
  • tatoo5ma
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Solving the Limit of x+sin(x) as x Goes to ∞
  • mohlam12
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Graph y=x^4 - 3x^2 + 2 & Find x-intercepts
  • rachael
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3
Algebra 2 Help: Simplifying a Complex Fraction with Step-by-Step Guide
  • -1337-
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Help Solve x = theta: cot(x) / tan(x) + 1 = tan(x) + cot(x)
  • mcs117
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Learn the Pythagorean Theorem with Lou
  • Lou1024
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6
Math Help: Solve Quadratic Function Intercepting X-Axis
  • ohlhauc1
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Solving Limit Without Derivatives
  • mohlam12
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5
How Do You Calculate the Slope of a Line with a 130-Degree Inclination?
  • konartist
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Proving the Pythagorean Identity: A Brief Analysis
  • Apost8
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6
Finding Exact Value of d tan (π/12)
  • rachael
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2
Solve Logistic Function: f(x)=\frac{6}{1+(4/3)^{-x}}
  • tony873004
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Why Does Calculating i^2 as sqrt(-1) * sqrt(-1) Lead to Confusion?
  • DeathKnight
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Solving Trigonometric Proofs: Struggling with Two Challenging Examples
  • mrtkawa
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7
What Price Maximizes Profit for Snax-Treat Sales at the Corner Store?
  • cscott
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I proving two Trig identities
  • xxiangel
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6
I can't understand this in partial fractions
  • dilan
  • · Replies 71 ·
3
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Matrix Inverse Problem: Troubleshooting Proof and Multiplication Error
  • DethRose
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3
Combinatorics Problem: Assigning Seats for 4 Guys and 4 Girls in a Single Row
  • Tony11235
  • · Replies 3 ·
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Really getting started precal honors problem
  • bennett
  • · Replies 5 ·
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5
Solving Geometry Equations with Cosine and Euler Angles
  • Hollysmoke
  • · Replies 9 ·
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9
Factoring Fractions: Solve (x+20)(x+10)^2+400
  • seang
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Equation for Point P's Path in Parametric Problem
  • Mauserketi
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What is the area of triangle ABC in 3-D?
  • ivybond
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4
A, B are countable. P(s), power set, and f: A-> not always countable?
  • Tony11235
  • · Replies 7 ·
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How can I solve for d in terms of l and constants?
  • UrbanXrisis
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4
The Potential of Your Ti-83 plus Calculator
  • konartist
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5
Complex integer expression problem
  • Werg22
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6
Calculating Half-Life: 50mg to 10mg in 18.4 Days
  • runicle
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4
Having trouble solving this limit? Need some hints?
  • mohlam12
  • · Replies 8 ·
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8
Show that this locus determines a circle in C
  • vaishakh
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Writing N-Letter Words with A, B, and C | Avoiding Repeated A's in Combinations
  • heman
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Does $\sqrt{n!+n}-\sqrt{n!} > 1$ for Some Integer n?
  • Treadstone 71
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Solve 0.7 < \alpha < 0.8 for x in y = \cos 3x + 2
  • Hootenanny
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Proving "If A U C = B U C then B = C" Without Drawing a Venn Diagram
  • caws
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Solve for x: f(g(x))=30 | Factor & Simplify: (x+5)^2+6(x+5)(x-4)
  • Nikola Tesla
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Step-by-Step Guide to Factoring Polynomials: Solving a Tricky Problem
  • Hollysmoke
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Polynomial Division puzzler(well to me anyway :P )
  • ramstin
  • · Replies 8 ·
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8
Understanding Limits: How to Solve Challenging Problems in Calculus
  • mohlam12
  • · Replies 1 ·
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Automorphism I don't understand
  • S&S
  • · Replies 1 ·
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1