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

Solve Logarithms: Find X When 8logx-3logx^2=log2

  • donniemateno
  • · Replies 2 ·
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2
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4

What is the graph of 4x = 4y - y^2?

  • zeion
  • · Replies 2 ·
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2

Factoring this thing with 6 degree

  • zeion
  • · Replies 8 ·
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8

Linear Algebra - Change of basis question

  • zeion
  • · Replies 2 ·
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2

Deriving the Tridimensional Equation of a Straight Line Using Vector Algebra

  • likephysics
  • · Replies 10 ·
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10

Find Equation of Circle Tangent to Line, X-Axis: (4,0)

  • Number1
  • · Replies 9 ·
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9

Writing cotangent in terms of cosinehow?

  • megr_ftw
  • · Replies 6 ·
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6
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1

Factoring something with absolute value

  • zeion
  • · Replies 4 ·
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4

Factoring something with cube power?

  • zeion
  • · Replies 9 ·
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9
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6

Find Intersection of -sqrt(x) & x-6 Functions

  • zeion
  • · Replies 8 ·
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8

Solve Cos B Homework - Trig & Geometry

  • um0123
  • · Replies 19 ·
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19
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9

What is the solution to (x-7)^2=(x+3)^2?

  • mistalopez
  • · Replies 3 ·
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3

Increasing Function Homework: Largest Interval

  • songoku
  • · Replies 8 ·
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8

Tension and Pulley Madness (Load weight)

  • jegues
  • · Replies 4 ·
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4

Simple probability that I can't get out

  • rock.freak667
  • · Replies 12 ·
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12

Can More Vectors Than Dimensions Be Linearly Independent?

  • choob
  • · Replies 2 ·
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2

Solving an equation and checking solution

  • mistalopez
  • · Replies 2 ·
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2

Check Value of Tan(A+B): 7/25, 5/13 - Acute & Obtuse

  • lemon
  • · Replies 3 ·
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3

Least squares fit to a straight line?

  • noname1
  • · Replies 1 ·
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1

Uniqueness of integers question

  • BustedBreaks
  • · Replies 4 ·
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4

Linear algebra - change of basis matrix

  • zeion
  • · Replies 1 ·
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1

Prove p_{1}p_{2}...p_{n}+1 is Not Divisible by Any of These Primes

  • BustedBreaks
  • · Replies 4 ·
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4

Unit Circle: Find x Satisfying sin x > cos x

  • huntingrdr
  • · Replies 14 ·
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14

This is SO simple, why can't I figure it out?

  • LBRRIT2390
  • · Replies 2 ·
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2

Learn the Process of Factorising: Step-by-Step Guide with Examples

  • Gringo123
  • · Replies 6 ·
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6

Calculating Determinants to Finding the Correct Answer

  • 60051
  • · Replies 6 ·
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6

How Can You Prove the Law of Cosines Using Coordinates?

  • huntingrdr
  • · Replies 5 ·
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5

Trigonometry Question: Solving sin90 + tan45 | Understand the Solution

  • Mejiera
  • · Replies 4 ·
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4

Simplifying a logical equivalence statement without a truth table

  • needshelp5
  • · Replies 1 ·
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1

Area of Triangle: How to Calculate

  • huntingrdr
  • · Replies 4 ·
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4

How Does f(x) = 1/sin(x) Satisfy the Given Functional Equation?

  • fled143
  • · Replies 3 ·
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3

What could be causing the discrepancy in the angle calculation?

  • kenewbie
  • · Replies 2 ·
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2

Solve Trig Problem: 0.15kg Mass w/ Wall & Lift @ 65° Angle

  • Tevion
  • · Replies 8 ·
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8

How do I calculate these questions relating to roots of quadratic equation?

  • eureka_beyond
  • · Replies 1 ·
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1

Can x3 be factored into common quadratic factor for P(x) and Q(x)?

  • songoku
  • · Replies 4 ·
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4

Trigonometry Help: Evaluating sin2y & cos2y

  • huntingrdr
  • · Replies 1 ·
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1

Solving Tension & Pulley Homework Problem

  • jegues
  • · Replies 7 ·
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7

Algebra applied to Trigonometry problem

  • Moroni
  • · Replies 14 ·
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14

Have I rearraged this formula correctly?

  • Gringo123
  • · Replies 3 ·
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3

Factorising Problem Solutions: 32x^3(2x^2+1)+8x(2x^2+1)^2

  • rudders93
  • · Replies 3 ·
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3

Rewriting an expression using a radical.

  • Cornraker
  • · Replies 1 ·
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1

How Are the Trigonometric Identities for Cosine and Sine Related?

  • nesta
  • · Replies 2 ·
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2

How Do You Handle Exponents Inside a Radical?

  • Cornraker
  • · Replies 4 ·
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4

Solving Tensions & Weights Homework Problem

  • jegues
  • · Replies 16 ·
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16

Solving Math Problem: Express -2^4 + 3^-1

  • Cornraker
  • · Replies 9 ·
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9

Calculating QP, QR, and the Angle PQR

  • lemon
  • · Replies 9 ·
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9

Find Value of a & Point of Intersection for Lines r1 & r2

  • lemon
  • · Replies 3 ·
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3

How to input equations into posts?

  • Cornraker
  • · Replies 2 ·
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2

Greatest Integer Function help

  • Kino
  • · Replies 2 ·
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2

Proving 2^n > n^2 for n >= 4 by Induction

  • ayusuf
  • · Replies 14 ·
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14

What Is the Probability of No Real Roots in a Quadratic Equation?

  • yuqiao
  • · Replies 1 ·
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1

How Do You Find the Point of Intersection for These Equations?

  • darrenc
  • · Replies 3 ·
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3

Unfamiliar Notation: \bigcup & \bigcap Explained

  • Lank
  • · Replies 2 ·
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2

Vector Equation: Line Parallel 2i-10j-8k Through (5,-1,6)

  • lemon
  • · Replies 2 ·
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2

Is ab+ac/a equal to b+ac? AB+AC/A=B+AC Equality Homework"

  • Cornraker
  • · Replies 11 ·
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11

Dividing Polynomials With Exponents

  • Leptos
  • · Replies 1 ·
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1

Solving (-1)vcos θ Identity Problem - Hi Friends!

  • nesta
  • · Replies 2 ·
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2

Population growth using logarithims

  • trials
  • · Replies 6 ·
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6

Linear transformations (algebra)

  • Idyllic
  • · Replies 3 ·
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3

Estimating Total Area: Help with Calculating Missing Space on a Flat Plat

  • higha level
  • · Replies 6 ·
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6

Parabola General to standard form

  • markwjak
  • · Replies 1 ·
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1

Trig Identities Question NEED HELP

  • darrenc
  • · Replies 3 ·
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3

How Do You Parameterize a Circle in 3D with a Given Diameter and Plane?

  • vintwc
  • · Replies 5 ·
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5
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6

Why is 7 less than or equal to 7 in inequality math?

  • Nikolas15
  • · Replies 1 ·
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1

Learn How to Solve Inequalities: 6 - 4x ≥ 2x - 3 and x ≤ 1.5

  • Gringo123
  • · Replies 4 ·
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4

Finding Angles A and B for Triangular Fire Spotting

  • morr485
  • · Replies 2 ·
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2

Can I Add Sine and Cosine Functions with a Non-Factorable Scalar?

  • mutzy188
  • · Replies 2 ·
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2

Does ln[ln(x)] = ln(x) * ln(x)

  • lilac30750
  • · Replies 3 ·
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3

Arithmetic mean of two unknowns in a system of equations

  • travism123
  • · Replies 5 ·
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5

Solve for x and y: Calculating Equations with Unknown Variables

  • rabihtawil
  • · Replies 4 ·
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4

Prove Trig Identities: sec(2x) - tan(2x) & cos(2x)/(1 + sin(2x))

  • Hockeystar
  • · Replies 3 ·
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3

Modulus and Congruency Problem

  • war485
  • · Replies 9 ·
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9

Solve the Briefcase Problem: Cost Price of Briefcase

  • 1/2"
  • · Replies 2 ·
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2

Area of triangle inside parallelogram

  • cjwalle
  • · Replies 1 ·
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1

Solving Equation: x² - 3x - 40 = 0

  • Gringo123
  • · Replies 2 ·
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2

Solve Polygon Problem: 1:2 Ratio & 3:4 Sum

  • 1/2"
  • · Replies 2 ·
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2

Factoring X4+1: Step-by-Step Guide

  • flyers
  • · Replies 3 ·
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3

Proof of additive property for sine

  • jtblizard
  • · Replies 4 ·
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4

How do I differentiate e^-2x * y?

  • James889
  • · Replies 4 ·
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4

Rearranging Equations: Finding y in x = (y^3+1)/(y^2+1)

  • Toby_Obie
  • · Replies 13 ·
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13

How do I solve for x in cotx=2 by using a scientific calculator?

  • Cuisine123
  • · Replies 13 ·
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13

Find the zeros of the function algebraically

  • PanTh3R
  • · Replies 5 ·
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5

Factoring a Polynomial: Finding the Missing Factor in 7X2(X - 2) - (X - 2)

  • Ryuk1990
  • · Replies 2 ·
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2

Magnitudes, Resultant Force (missing angle)

  • jegues
  • · Replies 12 ·
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12

Domain and Range of fg(x) for f(x)= e^{2x} + 3 and g(x) = ln(x-1)

  • Chewy0087
  • · Replies 5 ·
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5

Solving linear systems + gaussian elimination

  • dcramps
  • · Replies 4 ·
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4

Converting cm4 to m4: What's the Equation?

  • stainton1
  • · Replies 5 ·
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5

Solving the Birthday Problem: Probability & Average Guesses

  • curiouschris
  • · Replies 2 ·
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2

How can this be equal to the unit matrix?

  • Reid
  • · Replies 3 ·
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3

Show that two lines(in 3D) are parallel, skew or intercept

  • paraboloid
  • · Replies 3 ·
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3
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2

Discover Exam Mark Percentiles & Standard Deviation with Normal Curve

  • BrownianMan
  • · Replies 6 ·
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6

Magnitude and Component Question

  • jegues
  • · Replies 14 ·
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14

Understanding the Relationship between Negative Angles and Tangent Function

  • Jerbearrrrrr
  • · Replies 2 ·
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2

Solving Geometry Problem: x=27, Is y Solvable?

  • Bohrok
  • · Replies 2 ·
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2