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

Automorphism I don't understand

  • S&S
  • · Replies 1 ·
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1

Trig and Unit Circles: Solving cos pi(t) + sin pi(t) = 0 for pi(t)

  • teng125
  • · Replies 6 ·
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6

What is a two-variable graph?

  • Raza
  • · Replies 8 ·
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8

Factoring (a²−5a)² + 8(a²−5a) + 12 with substitution

  • Hollysmoke
  • · Replies 25 ·
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25

Complex Numbers: Solving Equations with z and zeta?

  • lektor
  • · Replies 2 ·
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2

How to Factor Polynomials with Three Terms?

  • Hollysmoke
  • · Replies 8 ·
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8

Why is f(2y) = y in the onto proof for this piecewise function?

  • kingerd
  • · Replies 3 ·
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3

Triangle inequality, parallelogram equality

  • asdf1
  • · Replies 4 ·
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4
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13

Sum of 2^N Sequence from 1-50: Solving Sigma Notation Problem

  • reliquator
  • · Replies 2 ·
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2

Solving Logarithms: Find Where You're Going Wrong

  • answerseeker
  • · Replies 3 ·
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3

How to Solve Simultaneous Equations with Logarithms

  • discombobulated
  • · Replies 5 ·
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5

Simplifying 5^2 + 3^0

  • vincentm
  • · Replies 10 ·
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10

Finding R and L values that best fit experimental impedance data

  • Just some guy
  • · Replies 3 ·
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3

Sequence based on sequential square root function

  • cscott
  • · Replies 9 ·
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9

Solving Quadratic Problem: How Far Does Cricket Ball Travel?

  • aricho
  • · Replies 4 ·
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4

Electromagnetic signals questions

  • dervast
  • · Replies 5 ·
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5

Prove (sec²-6tan+7)/(sec²-5) = (tan-4)/(tan+2)

  • duffman868
  • · Replies 14 ·
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14

Integrating sin(x)cos⁴(x), xe^(x²+1), and 5/m - 3√m

  • lektor
  • · Replies 10 ·
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10

Write fractional answers as mixed numbers

  • Cop
  • · Replies 2 ·
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2

Geometry and Discrete, prove this?

  • Hadjiev
  • · Replies 6 ·
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6

Proving the Relationship between Delta and Theta in an Isosceles Triangle

  • kahless2005
  • · Replies 4 ·
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4

How Does Wind Affect Airplane Velocity and Travel Time?

  • Hollysmoke
  • · Replies 2 ·
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2

Quadratic equation applying to graphs

  • dilan
  • · Replies 8 ·
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8

Finding Polynomial Equations from Table of Values

  • F.B
  • · Replies 3 ·
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3

Finding three terms of a geometric sequence with given sums

  • Numbnut247
  • · Replies 3 ·
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3

Why was the hyperbola named that?

  • PPonte
  • · Replies 7 ·
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7

Bit of a problem with polar coordinates.

  • kryptos
  • · Replies 4 ·
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4

Finding cos A when sin A = 0.9063 and A is obtuse

  • soggybread
  • · Replies 13 ·
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13
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4
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9

How can I identify patterns in math sequences?

  • runicle
  • · Replies 6 ·
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6

How long until man B catches man A traveling at different speeds?

  • drcathyc
  • · Replies 15 ·
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15

Solving the law of cosines for cos(C)

  • Paindealer
  • · Replies 4 ·
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4

Sum of nth Roots of 1: Solving for k = 1 to n-1

  • Benny
  • · Replies 5 ·
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5

Deduce the locus of points of the following equation

  • Benny
  • · Replies 6 ·
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6

How do you simplify radical numbers?

  • Lou1024
  • · Replies 4 ·
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4

Finding the Average: Solving Basic Pre-Algebra Problems

  • vincentm
  • · Replies 4 ·
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4

Simplifying [(m^3)(n^-3)]^-1 / (m^-5n)

  • runicle
  • · Replies 23 ·
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23

Proving Existence of 2-2 Block in 9-9 Board with 46 Random Red Squares

  • vaishakh
  • · Replies 6 ·
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6
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14
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1

Why does the minute hand move 120 degrees in 20 minutes?

  • kuahji
  • · Replies 2 ·
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2

Finding k to make 25x² - 60xy + ky² a perfect square trinomial

  • soggybread
  • · Replies 4 ·
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4

Solving 2r^3 + 6r^2 = 20r for r

  • ramstin
  • · Replies 10 ·
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10

Equation for Sinusoidal Function for Mass Above Table Top

  • lomantak
  • · Replies 2 ·
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2

Calculate the speed with which the ball hits the ground

  • discombobulated
  • · Replies 3 ·
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3

Solve Trig Identity Problem: Find all values for cos2x=cosx

  • yeyspaz
  • · Replies 1 ·
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1
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2

Need to learn about quadratic equations

  • dilan
  • · Replies 6 ·
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6

Can You Derive These Combinatorics Formulas for Fun?

  • hellraiser
  • · Replies 7 ·
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7

If the interest rate is 15.5%, how much interest will she pay per year?

  • Stealthdoze
  • · Replies 1 ·
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1

Proving the Limit of a Sequence Does Not Exist

  • VietDao29
  • · Replies 11 ·
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11
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2
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5
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2

How to solve sin²α = α/2

  • Psi-String
  • · Replies 9 ·
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9

Finding position vectors and triangle median lengths

  • xairylle
  • · Replies 4 ·
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4

Integrating sin²x from 0 to t using the half-angle identity

  • zee_22
  • · Replies 9 ·
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9

What is the imaginary part of each expression?

  • UrbanXrisis
  • · Replies 4 ·
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4

How does |1 - x| expand into cases for f(x) = 1 - |1 - x|?

  • ElDavidas
  • · Replies 2 ·
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2

How do you solve a system of equations with two variables?

  • Paindealer
  • · Replies 2 ·
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2

Simplify the expression assume all variables are positive?

  • chris4434
  • · Replies 2 ·
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2

Distance from point (3, 5, 1) to line in 3D space

  • UrbanXrisis
  • · Replies 3 ·
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3

How to determine the roots of a quadratic equation

  • powp
  • · Replies 3 ·
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3

Proving Midpoint of Triangle Sides is Parallel and 1/2 Length

  • asdf1
  • · Replies 3 ·
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3

Front end rounding with 3.9 × 7.4 and 33.294 ÷ 6.2

  • Gamma
  • · Replies 3 ·
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3

Find a vector parallel to two planes

  • UrbanXrisis
  • · Replies 3 ·
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3

Solve ln (3+x)=7: Get x=1093.63

  • jacy
  • · Replies 3 ·
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3

What is the probability A speaks before B and B before C?

  • gaganpreetsingh
  • · Replies 5 ·
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5

Having problems with polynomial

  • kingerd
  • · Replies 11 ·
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11

Proving Equivalence of y is Rational, y/3 is Rational, 2y+5 is Rational

  • PowerStrike
  • · Replies 4 ·
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4
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4

Finding the inverse of f(x) = 1/(1+x) and its domain

  • jacy
  • · Replies 4 ·
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4

Rounding 38.90952 to thousandths and 320.945 to tenths

  • Gamma
  • · Replies 2 ·
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2

Find x in x^3+x^2-x-1=0 Equation

  • superelf83
  • · Replies 2 ·
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2

1st year stats, empirical rule- range of values

  • m0286
  • · Replies 3 ·
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3

Equations and Tangents for Curve C at Point P

  • discombobulated
  • · Replies 5 ·
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5

Finding the Taylor series for ln(1-x)

  • teng125
  • · Replies 3 ·
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3

Integrating Problem: Solve Questions Using Formula for \int [f(x)]^nf(x)

  • ngkamsengpeter
  • · Replies 2 ·
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2

Power series representation for arctan(x) starting from 1/(1+x²)

  • teng125
  • · Replies 5 ·
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5

Finding where tan(x) ≤ −50 on a unit circle

  • UrbanXrisis
  • · Replies 9 ·
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9

Solving e^(2x) - 3e^(x+1) + 2e^2 = 0

  • cscott
  • · Replies 2 ·
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2

Solving x^(2/3)=4: Logarithms or What?

  • Mozart
  • · Replies 4 ·
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4
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1

Simplifying sin^2 2θ/(1+cos^2 2θ) as a Function of sin θ

  • UrbanXrisis
  • · Replies 3 ·
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3

How Can I Simplify Trigonometric Identities for Tomorrow's Quiz?

  • kevinlikesphysics
  • · Replies 3 ·
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3
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1

Why does (log base c of a)^b = b(log base c of a)?

  • Rafe
  • · Replies 3 ·
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3

Where can I find free precalculus help websites?

  • TMNT
  • · Replies 2 ·
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2

Finding matrix D so that 2a+b-d equals the 3×2 zero matrix

  • DethRose
  • · Replies 13 ·
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13

Can Points M and N Trisect a Parallelogram's Diagonal and Sides?

  • Van Allen
  • · Replies 2 ·
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2

Find the remainder of a polynomial

  • discombobulated
  • · Replies 5 ·
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5
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1

How Do You Solve a Linear Algebra Slope Problem?

  • DethRose
  • · Replies 2 ·
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2

Finding parabolas through two points using Gaussian elimination

  • DethRose
  • · Replies 4 ·
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4

Geometric/Arithmetic Sequences.

  • forevergone
  • · Replies 12 ·
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12

Computing limits of (1+1/x)^x and related forms as x approaches infinity

  • MathematicalPhysicist
  • · Replies 3 ·
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3

Prove that n^3 + 2n is divisible by 3 for any natural number n

  • teng125
  • · Replies 7 ·
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7
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5