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

Square root of negative number in f(x) = √x / (x(x-1))

  • yobrojas
  • · Replies 2 ·
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2

Solve |z| - z = 1 + 2i for complex z

  • Broken Steel
  • · Replies 3 ·
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3

Two tangent lines with distance √3 times the radius

  • Miike012
  • · Replies 3 ·
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3
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6

Exponential functions/finance problem

  • supernova1203
  • · Replies 9 ·
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9
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33

Circumcentre of an equilateral triangle

  • Chronos000
  • · Replies 3 ·
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3

Solar panel payback period: why is 40 years correct when I got 20?

  • Mukilab
  • · Replies 19 ·
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19

Finding the range of f(x)=-√(t(1-t)) without calculus

  • Procrastinate
  • · Replies 4 ·
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4
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7

Sum of Positive Integers Less Than 150 Not Multiples of 5 or 7

  • Michael_Light
  • · Replies 1 ·
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1

Graphing Trig + algebra functions

  • Miike012
  • · Replies 4 ·
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4

Proof of Trigonometric Identities: Sin(-theta), Cos(-theta), Tan(-theta)

  • Miike012
  • · Replies 2 ·
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2

Solving a Trig Word Problem Involving Pipes

  • Miike012
  • · Replies 2 ·
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2

What are the standard dimensions for paper size 297x210mm?

  • chawki
  • · Replies 12 ·
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12

Transforming a line segment with matrices?

  • mneox
  • · Replies 4 ·
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4

Finding the Radius (word problem)

  • Miike012
  • · Replies 33 ·
2
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33

How to solve (1+cosA)^2 - (1-cosA)^2 - sin^2A = ctgA*sinA*cosA

  • makarov1901
  • · Replies 5 ·
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5

Maximum and minimum of 1/f(x) where f(x)=2(x-5/4)²+15/8

  • Michael_Light
  • · Replies 11 ·
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11

Solving y² + xy = x² for y as an explicit function

  • chwala
  • · Replies 11 ·
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11

Solve Geometric Sequence Word Problem in Gossipopolis

  • ThomasMagnus
  • · Replies 3 ·
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3

What is the reason for the inverse of x^2 not being a function?

  • Willowz
  • · Replies 5 ·
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5

Why do eigenvectors have parameters while the lecturer's don't?

  • Maybe_Memorie
  • · Replies 1 ·
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1

How to Prove a2+b2 >= 2ab and x2+y2+z2 >= 1/3 c2?

  • Michael_Light
  • · Replies 1 ·
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1

Solving for x: Find the Solution to 2sinx-sin2x=4/∏

  • maff is tuff
  • · Replies 2 ·
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2

An estate agent charges 0.75% fees .

  • tehmatriks
  • · Replies 1 ·
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1
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8

Why Does the Solution Include √13 in the Numerator for Trigonometric Ratios?

  • CrossFit415
  • · Replies 1 ·
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1

Problem with differentiation and area of components

  • TW Cantor
  • · Replies 4 ·
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4

How Do You Complete the Square for 2kx^2 - (k+1)x + 4?

  • autodidude
  • · Replies 16 ·
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16

How to Solve Functional Inequality with Multiple Unknowns?

  • Michael_Light
  • · Replies 14 ·
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14

How to identify which graph has the larger mode

  • omni
  • · Replies 2 ·
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2

Calculating Probabilities for Dorm Room Appliances: TV, Fridge, or Neither?

  • Notoriousb3
  • · Replies 3 ·
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3

How do you construct proofs for set unions?

  • fruitjunkie
  • · Replies 8 ·
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8

How Does Random Reset Impact Expected Distance in a Random Walk?

  • RsMath
  • · Replies 2 ·
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2

Find k and a when dividing x^4-16x^2-25x+10 by x^2-2x+k

  • pankaz712
  • · Replies 1 ·
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1

Triginometry: Half Angle Identities

  • StephenAA
  • · Replies 5 ·
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5

How Does a Shift in Mean Affect the Moving Average Calculation?

  • neznam
  • · Replies 4 ·
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4

Grade 11 Math Problem, cant figure out the transformations

  • baller2353
  • · Replies 1 ·
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1

Artist Seeks Math Guru: "Beautiful" Equations on Infinity/Paradox

  • gentleapocaly
  • · Replies 3 ·
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3

What will my new average be if I get 90% on my 7th test?

  • t_n_p
  • · Replies 1 ·
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1
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5

Exponential equation (simple?)

  • 1875
  • · Replies 11 ·
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11

Finding your height above sea level from two mountains using angles

  • dragonblood
  • · Replies 15 ·
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15

Conditional probablity loaded die problem

  • raptor1770
  • · Replies 7 ·
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7

Beat Your Deadline: Finish in 3 Hours!

  • fruitjunkie
  • · Replies 2 ·
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2

How to solve a system of 3 equations for 3 unknowns

  • christurnadge
  • · Replies 4 ·
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4

Finding s for Parallel Vectors in R3

  • 75 johnson
  • · Replies 3 ·
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3

Recursive using strong induction and structural induction (rosen)

  • DrWillVKN
  • · Replies 2 ·
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2

What are the steps to solve this quartic equation?

  • Michael_Light
  • · Replies 2 ·
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2

Determining Intersections of Quadratic Equations with a Parameter

  • t_n_p
  • · Replies 5 ·
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5

Projectile Motion Trig Problem

  • Phyzwizz
  • · Replies 1 ·
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1

Identifying an Unknown Symbol in a Passage

  • Miike012
  • · Replies 3 ·
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3

Geometry books with practice problems for self-study

  • Miike012
  • · Replies 3 ·
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3

Die is rolled 3 times and 1 more

  • RsMath
  • · Replies 5 ·
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5

This is a problem on mensuration ( VOLUMES AND SURFACE AREAS)

  • agnibho
  • · Replies 3 ·
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3

How do I solve a cycle conjugation problem?

  • hopsonuk
  • · Replies 1 ·
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1

What is the relationship between coefficients and roots in quadratic equations?

  • Michael_Light
  • · Replies 3 ·
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3

Can You Crack This Challenging Math Puzzle?

  • adventuretime
  • · Replies 2 ·
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2

Why couldn't this be factored further?

  • Peter Tran
  • · Replies 3 ·
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3

Problem with angles and differentiation

  • TW Cantor
  • · Replies 11 ·
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11
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6

Solving system of equations for matrix?

  • mneox
  • · Replies 3 ·
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3

Solving Equations with Fractions

  • Mkorr
  • · Replies 2 ·
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2

Range of natural log, some trigonometry

  • Kawakaze
  • · Replies 24 ·
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24

Trigonometric Equation: Solving for Sec x=2 and Reviewing for a Test

  • Phyzwizz
  • · Replies 2 ·
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2

Find b so g(x) = 1-x² has an inverse on [b,2]

  • t_n_p
  • · Replies 2 ·
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2

How Do You Calculate the Surface Area of an Enlarged Cylinder?

  • Elizabeth12
  • · Replies 4 ·
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4

Finding a cool polar equation to graph for precalculus project

  • jcoolio12
  • · Replies 8 ·
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8

Proving restriction of T^i to Im(T) is nonsingular

  • stukbv
  • · Replies 2 ·
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2

Seemingly simple arc length problem I keep getting wrong

  • 1MileCrash
  • · Replies 4 ·
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4

Find the top vertex coordinate of a regular tetrahedron

  • jwxie
  • · Replies 1 ·
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1

Polynomial relationship problem

  • Michael_Light
  • · Replies 1 ·
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1

Solving Projected Particle Problem: Find Value of h

  • aurao2003
  • · Replies 1 ·
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1

Simplifying a complex algebraic expression

  • 7yler
  • · Replies 3 ·
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3

Calculating Averages: Not so simple after all?

  • Astro
  • · Replies 6 ·
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6

Matrix multiplication/Rotations

  • Jerbearrrrrr
  • · Replies 3 ·
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3

Discrete random variable cumulative distrub. function

  • jsmith613
  • · Replies 1 ·
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1

Is my calculator giving the wrong score or ? (Simple calculation question)

  • Femme_physics
  • · Replies 11 ·
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11

Finding horizontal asymptote and sketching rational function graph

  • aurao2003
  • · Replies 8 ·
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8

Finding a sequence pattern for homework

  • Char. Limit
  • · Replies 1 ·
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1

Finding Trig Identities: How Do I Solve Trig Equations with Given Values?

  • Mike_Winegar
  • · Replies 1 ·
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1

Express log₃ 48 in terms of p and q where log₄ N = p and log₁₂ N = q

  • Michael_Light
  • · Replies 6 ·
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6

Find the solutions to this inquality by induction

  • emyt
  • · Replies 3 ·
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3

Polynomial question from spivak's calculus

  • osnarf
  • · Replies 8 ·
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8

How do I find phase shift C in Y=A*Sin[B(x-c)]+D?

  • Miike012
  • · Replies 1 ·
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1

How Do You Calculate Frequency from Period?

  • andrey21
  • · Replies 24 ·
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24

Finding sequence length when the middle term equals 156.25

  • ThomasMagnus
  • · Replies 7 ·
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7

Sum of infinite circles and triangles with largest circle radius 10

  • darkmagic
  • · Replies 2 ·
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2

Complex Number Equations: Solving for Roots and Expressing in Standard Form

  • Michael_Light
  • · Replies 4 ·
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4

Height of Object Launched at 13.8 m/s

  • theredeemer
  • · Replies 3 ·
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3

Cross Product Identity: Solving for (A X B)^2

  • Sirius24
  • · Replies 5 ·
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5

Calculating Levels in a Geometric Series Phone Tree

  • ThomasMagnus
  • · Replies 2 ·
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2

Sin(a+b)sin(a-b) = cos^2b - cos^2a

  • zeion
  • · Replies 10 ·
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10

Why does 2/(tanx+cotx) simplify to sin(2x) not sinx?

  • nzashadow
  • · Replies 4 ·
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4

Log Question - Relationship between two points on log function

  • maplesyrup23
  • · Replies 11 ·
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11

Complimentary Angles: Understand Why sin(90-theta) = cos theta

  • Miike012
  • · Replies 1 ·
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1

Proving a 2:1 ratio triangle having a Zero Vector

  • aeromat
  • · Replies 1 ·
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1

Simplify Math Course Work: How to Rationalize Denominators with Conjugates

  • Michael_Light
  • · Replies 6 ·
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6

Solving a Dipstick Problem for Cone and Cylinder Volumes

  • pat666
  • · Replies 43 ·
2
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43