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

Can You Solve this Trig Inverse Equation with arctan and arctan?

  • JoshB645
  • · Replies 1 ·
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Can Function Limits Vary with Different Approaching Values?

  • Abukadu
  • · Replies 1 ·
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1

Difficult Trig Identity (no double ange, power reducing formulas)

  • Alex1067
  • · Replies 16 ·
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16

Proving Continuity of a Rational Function

  • Дьявол
  • · Replies 6 ·
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6

What Does a Non-Zero Vector Imply?

  • thomas49th
  • · Replies 1 ·
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1

Statistics Expected Variable Question

  • thomas49th
  • · Replies 1 ·
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1

Can You Find the Complex Roots of x³ - 64 = 0?

  • thomas49th
  • · Replies 14 ·
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14

Relearning a little bit of trig

  • dolomite
  • · Replies 7 ·
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7

Understanding the Trigonometric Identity: cos^2 x = 1/2 + cos(2x)/2

  • leopard
  • · Replies 4 ·
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4
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1

Max Value of r1+r2 in Inscribed Circles of Semicircle

  • ritwik06
  • · Replies 3 ·
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3

What is the maximum height reached by a flying cow launched from a castle?

  • AdamNailor
  • · Replies 6 ·
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6

Trig Formula and Exact Value for sin[(2pi/3) + pi]

  • TayTayDatDude
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2

Relationships between first and second derivatives

  • madgab89
  • · Replies 3 ·
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3

How Can You Simplify Problems Involving Variables in Three Dimensions?

  • timscully
  • · Replies 4 ·
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4

Are These T-Test and Effect Size Calculations Correct?

  • nobahar
  • · Replies 2 ·
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2

Symmetricity of exponential graphs

  • asd1249jf
  • · Replies 11 ·
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11

Solve Trig Equation #2 on 0<=theta<=2pi

  • Draggu
  • · Replies 7 ·
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7

Help Solving Math Problem: Numerator < 5, Denominator > 3

  • asi123
  • · Replies 12 ·
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12
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2

How Do I Prove This Vector Space Equality?

  • asi123
  • · Replies 2 ·
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2

How do I solve this trigonometry equation involving sine and cosine?

  • Draggu
  • · Replies 19 ·
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19

Solve Congruence Problem for Prime & Integer

  • Ed Aboud
  • · Replies 10 ·
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10

Is the Trigonometric Homework Statement Solvable?

  • Gaara09
  • · Replies 11 ·
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11

Finding # of Sides in Polygon Given Measure of Interior Angle

  • dustie
  • · Replies 4 ·
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4

Two questions - (a) Differentiating inverse trig function and (b) vector

  • andrew.c
  • · Replies 5 ·
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5

Unsure how to work algebra problem

  • snoggerT
  • · Replies 16 ·
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16

Finding the Reference Number for t Values

  • nikita33
  • · Replies 4 ·
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4

English translation please in math

  • marcuss
  • · Replies 3 ·
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3

Solve Logarithm Equation: 2log_{2}X=1+log_{a}(7X-10a)

  • icystrike
  • · Replies 10 ·
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10

Probability of Winning/Losing given the number of Wins/Losses/Draws

  • wanchosen
  • · Replies 2 ·
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2

Confirm a) & Solve b): Homework Help

  • battery2004
  • · Replies 3 ·
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3

Question from test capabilities

  • m_s_a
  • · Replies 1 ·
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1

How Do You Calculate Modulus and Perform Operations on Complex Numbers?

  • alpha01
  • · Replies 2 ·
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2

Forgot how to graph sin graphs(translation)

  • HelloMotto
  • · Replies 2 ·
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2

P-Chart: Diff. btwn lot & sample size

  • axnman
  • · Replies 1 ·
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1

Another Probability Question, About Odds and betting

  • wk1989
  • · Replies 8 ·
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8

Failing at projection question

  • reha
  • · Replies 1 ·
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1

Help Solving Momentum Problem with 3 Kids and a Cart

  • canadianballa
  • · Replies 10 ·
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10

Parabolas: Getting a Parabola that Does Not Cross X or Y Axis

  • offtheleft
  • · Replies 25 ·
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25

Find the exact value of sin(W+T)

  • TayTayDatDude
  • · Replies 24 ·
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24

Finding Integer Sided Isosceles Triangles with Perimeter 2008

  • ritwik06
  • · Replies 5 ·
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5

Solve the simultaneous equation:

  • d3v3st4t10n
  • · Replies 8 ·
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8

Vectors - Prove the following relation about the centroid

  • ritwik06
  • · Replies 3 ·
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3

Answer 4x4 Determinant: a+b+c+d

  • archita
  • · Replies 10 ·
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10

Radian Measure and the Unit Circle

  • Sean Cook
  • · Replies 4 ·
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4

Understanding Limits: Common Mistakes and How to Find Bounds

  • Дьявол
  • · Replies 7 ·
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7

Matrices and Invertible Linear Transformations

  • war485
  • · Replies 1 ·
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1

Finding the Center and Radius of a Circle: Analytic Geometry I

  • kLownn
  • · Replies 11 ·
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11

Find the Exact Value of arcsin(sin(5pi/9))

  • math_help
  • · Replies 2 ·
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2

How to Prove a Difficult Trig Identity?

  • soccertev
  • · Replies 23 ·
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23

Sequences/Series Sigma Question

  • JBD2
  • · Replies 4 ·
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4

FInd the work done when a cnstant force applied to an object

  • eddwinn
  • · Replies 1 ·
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1

Write a matrix to display the information: x=-10.

  • trujaxchik
  • · Replies 4 ·
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4

Paradox of Obtuse Angles in the Sine Rule

  • ritwik06
  • · Replies 4 ·
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4

Proving Identity: cos2A/1 + sin2A = cotA - 1 / cotA + 1

  • Draggu
  • · Replies 12 ·
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12

Calculating Real GDP Growth with Nominal GDP and Inflation Rates

  • MaxManus
  • · Replies 3 ·
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3

How Can I Prove That B^3 Equals 7B Minus 6I Using Matrix B?

  • natural
  • · Replies 8 ·
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8

Simple factoring after differentiating.

  • calisoca
  • · Replies 4 ·
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4

Proofs: Logarithm - Clues for Understanding

  • Abukadu
  • · Replies 4 ·
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4

Proving GCD(a,b)*LCM(a,b) = ab

  • MatheMatt
  • · Replies 2 ·
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2

How Do You Solve Exponential Equations Using Logarithms?

  • moe11
  • · Replies 4 ·
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4

Solving problems using Half Angle identities

  • saychanh
  • · Replies 2 ·
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2

Finding the Limit of a Fraction with Square Roots | Calculus Homework Help

  • Дьявол
  • · Replies 21 ·
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21

Convert the polar equation into rectangular coordinates

  • louie3006
  • · Replies 6 ·
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6

Solve Trig Factor Law: sin x + cos x from a Given Equation

  • icystrike
  • · Replies 14 ·
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14

Proving an Equation Involving k: A Homework Challenge

  • icystrike
  • · Replies 2 ·
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2

Finding the Vertex of a Parabola: y = (x + 2)^2 - 3

  • Kristinanne
  • · Replies 10 ·
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10

How Do Trigonometric Identities Relate to Each Other?

  • HelloMotto
  • · Replies 4 ·
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4

2 vectors orthogonal to 3 4-d vectors

  • Damascus Road
  • · Replies 4 ·
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4

Linear Operator Matrix for T Defined by Formula | Example Included

  • Damascus Road
  • · Replies 1 ·
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1

Distributing 3 Pears & 4 Apples to 9 People: Combinations

  • tgt
  • · Replies 5 ·
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5

What Are the X-Intercepts of a Parabola?

  • Kristinanne
  • · Replies 2 ·
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2

Making Equations to Solve a Problem-HELP, PLEASE

  • 1calculus1
  • · Replies 1 ·
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1

Help with Straight Line 3y-x-k=0 & Turning Points

  • Run Haridan
  • · Replies 1 ·
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1

How to Solve a Cubic System by Eliminating Variables?

  • Dorotea
  • · Replies 4 ·
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4

Find the limit of (sqrt(1+x) - 1)/(cuberoot(1+x)-1) as x->0

  • sara_87
  • · Replies 6 ·
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6

Solving for Line L1: Finding equation of Line L1

  • ritwik06
  • · Replies 5 ·
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5

Prove an expression is not a square

  • hew
  • · Replies 2 ·
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2

Calculating Unit Vectors and Angles

  • andrew.c
  • · Replies 4 ·
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4

Orthogonal Projection Matrices for Points on Subspaces in R^3

  • forty
  • · Replies 2 ·
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2
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1

Solve for y: Find Ratio of E Dividing CA in Triangle AOB

  • ritwik06
  • · Replies 2 ·
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2

Cant work this out, why is it happening,

  • devanlevin
  • · Replies 5 ·
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5
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2

Finding unknown quadratic equations

  • madgab89
  • · Replies 7 ·
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7

Solving quadratic equations ( finding the value of x)

  • Zyne
  • · Replies 3 ·
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3

Solve Logarithmic Equation: 4(x+1)= 8(x-1)

  • nikita33
  • · Replies 7 ·
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7

Solve for x: Logarithmic Equation with Multiple Terms - Step by Step Guide

  • nikita33
  • · Replies 4 ·
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4

Simple problem - cant spot my own mistake

  • synthetic.
  • · Replies 2 ·
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2

Solving a Trig Equation (Correct?)

  • whyorwhynot
  • · Replies 8 ·
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8

Plotting Points on Normal Probability Paper: Tips & Tricks

  • axnman
  • · Replies 1 ·
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1

Implicit differentiation homework

  • UNknown 2010
  • · Replies 12 ·
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12

Incentre Properties: Proving DB = DC = DI and AD = AE = (AB + AC)/2

  • vaishakh
  • · Replies 3 ·
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3

How can I solve the complex number equation x^4 + 14 = 0?

  • greg997
  • · Replies 5 ·
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5
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2

Limit of function ( sandwich method)

  • Дьявол
  • · Replies 4 ·
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4

Are complete cycles in trigonometry always 360 degrees?

  • Inertialforce
  • · Replies 1 ·
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1

Calculating Chances of Success with Binomial Distribution: A Homework Example

  • Schmidtter
  • · Replies 1 ·
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1